| Genus | Species | Description | First record | Squares | Threat level | |
|---|---|---|---|---|---|---|
| Family Linyphiidae (268x) | ||||||
| Abacoproeces (1x) | Abacoproeces saltuum | (L. Koch, 1872) | 1933, Lužná (okr. Rakovník) | 74 | Not endangered | |
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Acantholycosa (2x) | Acantholycosa lignaria | (Clerck, 1757) | 1886, Srní, č. o. Modrava | 14 | Strongly endangered | |
| Acantholycosa norvegica sudetica | (L. Koch, 1875) | 1875, Pec pod Sněžkou | 19 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Acartauchenius (1x) | Acartauchenius scurrilis | (O. Pickard-Cambridge, 1873) | 1903, Vrané nad Vltavou | 26 | Endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Achaeridion (1x) | Achaeridion conigerum | (Simon, 1914) | 10/07/1993, Doksy (okr. Č. Lípa), č. o. Břehyně | 7 | Criticaly endangered | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Aculepeira (1x) | Aculepeira ceropegia | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 205 | Not endangered | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Aelurillus (1x) | Aelurillus v-insignitus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 159 | Not endangered | |
| Afraflacilla (1x) | Afraflacilla epiblemoides | (Chyzer, 1891) | 08/03/2000, Lednice | 2 | Criticaly endangered | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Agalenatea (1x) | Agalenatea redii | (Scopoli, 1763) | 11/23/1873, Františkovy Lázně | 59 | Not endangered | |
Family Agelenidae (13x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Agelena (1x) | Agelena labyrinthica | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 138 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Agnyphantes (1x) | Agnyphantes expunctus | (O. Pickard-Cambridge, 1875) | 08/21/1962, Vítkovice | 6 | Strongly endangered | |
Family Liocranidae (10x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Agroeca (4x) | Agroeca brunnea | (Blackwall, 1833) | 1894, Písek (okr. Písek), č. o. Budějovické Předměstí | 198 | Not endangered | |
| Agroeca cuprea | Menge, 1873 | 1898, Praha, č. o. Praha 4 | 78 | Almost threatened | ||
| Agroeca lusatica | (L. Koch, 1875) | 06/05/1968, Přerov nad Labem | 12 | Endangered | ||
| Agroeca proxima | (O. Pickard-Cambridge, 1871) | 1933, Lužná (okr. Rakovník) | 53 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Agyneta (14x) | Agyneta affinis | (Kulczyński, 1898) | 1940, Senorady | 62 | Not endangered | |
| Agyneta cauta | (O. Pickard-Cambridge, 1903) | 1947, Jindřichův Hradec, č. o. Jindřichův Hradec I | 35 | Almost threatened | ||
| Agyneta conigera | (O. Pickard-Cambridge, 1863) | 08/15/1935, Hatín, č. o. Roseč | 51 | Not endangered | ||
| Agyneta decora | (O. Pickard-Cambridge, 1871) | 06/23/1960, Pec pod Sněžkou, č. o. Dolní Malá Úpa | 3 | Missing | ||
| Agyneta equestris | (L. Koch, 1881) | 05/14/1948, Lelekovice | 14 | Strongly endangered | ||
| Agyneta fuscipalpa | (C. L. Koch, 1836) | 1930, Praha, č. o. Praha 5 | 8 | Strongly endangered | ||
| Agyneta innotabilis | (O. Pickard-Cambridge, 1863) | 1947, Jindřichův Hradec, č. o. Jindřichův Hradec I | 10 | Endangered | ||
| Agyneta milleri | (Thaler, Buchar & Kůrka, 1997) | 01/31/1962, Vítkovice | 4 | Endangered | ||
| Agyneta mollis | (O. Pickard-Cambridge, 1871) | 08/15/1934, Hatín, č. o. Roseč | 24 | Almost threatened | ||
| Agyneta ramosa | Jackson, 1912 | 05/20/1958, Lednice | 17 | Endangered | ||
| Agyneta rurestris | (C. L. Koch, 1836) | 1892, Špindlerův Mlýn | 249 | Not endangered | ||
| Agyneta saxatilis | (Blackwall, 1844) | 08/15/1934, Hatín, č. o. Roseč | 124 | Not endangered | ||
| Agyneta simplicitarsis | (Simon, 1884) | 05/17/1965, Mikulov (okr. Břeclav), č. o. Klentnice | 5 | Criticaly endangered | ||
| Agyneta subtilis | (O. Pickard-Cambridge, 1863) | 1933, Lužná (okr. Rakovník) | 31 | Endangered | ||
Family Agelenidae (13x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Allagelena (1x) | Allagelena gracilens | (C. L. Koch, 1841) | 11/23/1873, Františkovy Lázně | 91 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Allomengea (2x) | Allomengea scopigera | (Grube, 1859) | 1962, Vítkovice | 32 | Not endangered | |
| Allomengea vidua | (L. Koch, 1879) | 1949, Borkovice, č. o. Mažice | 45 | Almost threatened | ||
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Alopecosa (15x) | Alopecosa aculeata | (Clerck, 1757) | 05/10/1957, Třeboň, č. o. Třeboň II | 43 | Endangered | |
| Alopecosa cuneata | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 185 | Not endangered | ||
| Alopecosa cursor | (Hahn, 1831) | 1929, Mikulov (okr. Břeclav), č. o. Mikulov | 8 | Strongly endangered | ||
| Alopecosa fabrilis | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 6 | Criticaly endangered | ||
| Alopecosa farinosa | (Herman, 1879) | 1894, Roztoky | 100 | Not endangered | ||
| Alopecosa inquilina | (Clerck, 1757) | 11/23/1873, Františkovy Lázně | 44 | Almost threatened | ||
| Alopecosa pinetorum | (Thorell, 1856) | 10/08/1983, Branná, č. o. Ostružná | 7 | Strongly endangered | ||
| Alopecosa psammophila | Buchar, 2001 | 06/04/1996, Bzenec | 1 | Criticaly endangered | ||
| Alopecosa pulverulenta | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 278 | Not endangered | ||
| Alopecosa schmidti | (Hahn, 1835) | 1894, Praha, č. o. Praha 4 | 27 | Strongly endangered | ||
| Alopecosa solitaria | (Herman, 1879) | 1894, Křižanovice | 14 | Strongly endangered | ||
| Alopecosa striatipes | (C. L. Koch, 1839) | 1929, Velké Meziříčí | 8 | Criticaly endangered | ||
| Alopecosa sulzeri | (Pavesi, 1873) | 1894, Střelice (okr. Brno-venkov) | 40 | Endangered | ||
| Alopecosa taeniata | (C. L. Koch, 1835) | 1859, Praha, č. o. Praha 1 | 121 | Not endangered | ||
| Alopecosa trabalis | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 100 | Not endangered | ||
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Altella (1x) | Altella biuncata | (Miller, 1949) | 04/20/1940, Mohelno | 20 | Strongly endangered | |
Family Amaurobiidae (4x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Amaurobius (3x) | Amaurobius fenestralis | (Ström, 1768) | 1859, Praha, č. o. Praha 1 | 170 | Not endangered | |
| Amaurobius ferox | (Walckenaer, 1830) | 1859, Praha, č. o. Praha 1 | 45 | Not endangered | ||
| Amaurobius jugorum | L. Koch, 1868 | 1934, Luže, č. o. Bělá | 53 | Endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Anelosimus (1x) | Anelosimus vittatus | (C. L. Koch, 1836) | 11/23/1873, Františkovy Lázně | 53 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Anguliphantes (2x) | Anguliphantes angulipalpis | (Westring, 1851) | 11/23/1873, Františkovy Lázně | 47 | Almost threatened | |
| Anguliphantes tripartitus | (Miller & Svatoň, 1978) | 1962, Vítkovice | 43 | Not endangered | ||
Family Hahniidae (7x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Antistea (1x) | Antistea elegans | (Blackwall, 1841) | 1892, Harrachov, č. o. Nový Svět | 109 | Almost threatened | |
Family Anyphaenidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Anyphaena (2x) | Anyphaena accentuata | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 139 | Not endangered | |
| Anyphaena furva | Miller, 1967 | 07/30/1982, Hřebečníky, č. o. Týřovice | 2 | Strongly endangered | ||
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Aphantaulax (1x) | Aphantaulax cincta | (L. Koch, 1866) | 04/20/1998, Bzenec | 1 | Strongly endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Aphileta (1x) | Aphileta misera | (O. Pickard-Cambridge, 1882) | 1949, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 26 | Endangered | |
Family Cheiridiidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Apocheiridium (1x) | Apocheiridium ferum | (Simon, 1879) | 04/02/2021, Tovačov | 1 | ||
Family Liocranidae (10x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Apostenus (1x) | Apostenus fuscus | Westring, 1851 | 1894, Brno, č. o. Brno I | 90 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Araeoncus (2x) | Araeoncus crassiceps | (Westring, 1861) | 11/23/1873, Františkovy Lázně | 28 | Almost threatened | |
| Araeoncus humilis | (Blackwall, 1841) | 08/15/1934, Hatín, č. o. Roseč | 115 | Not endangered | ||
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Araneus (9x) | Araneus alsine | (Walckenaer, 1802) | 11/23/1873, Františkovy Lázně | 73 | Endangered | |
| Araneus angulatus | Clerck, 1757 | 1859, Praha, č. o. Praha 1 | 54 | Almost threatened | ||
| Araneus diadematus | Clerck, 1757 | 1859, Praha, č. o. Praha 1 | 276 | Not endangered | ||
| Araneus marmoreus | Clerck, 1757 | 1859, Praha, č. o. Praha 1 | 142 | Not endangered | ||
| Araneus nordmanni | (Thorell, 1870) | 08/14/1892, Tanvald | 8 | Criticaly endangered | ||
| Araneus quadratus | Clerck, 1757 | 1859, Praha, č. o. Praha 1 | 414 | Not endangered | ||
| Araneus saevus | (L. Koch, 1872) | 08/16/1971, Srní, č. o. Horská Kvilda | 4 | Criticaly endangered | ||
| Araneus sturmi | (Hahn, 1831) | 1869, Lužná (okr. Rakovník) | 132 | Almost threatened | ||
| Araneus triguttatus | (Fabricius, 1775) | 1859, Praha, č. o. Praha 1 | 68 | Almost threatened | ||
| Araniella (5x) | Araniella alpica | (L. Koch, 1869) | 1875, Pec pod Sněžkou | 51 | Almost threatened | |
| Araniella cucurbitina | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 227 | Not endangered | ||
| Araniella displicata | (Hentz, 1847) | 05/19/1961, Dolní Beřkovice | 16 | Endangered | ||
| Araniella inconspicua | (Simon, 1874) | 06/15/1979, Branná, č. o. Ostružná | 15 | Endangered | ||
| Araniella opisthographa | (Kulczyński, 1905) | 11/30/1972, Nový Bydžov, č. o. Nová Skřeněř | 74 | Not endangered | ||
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Archaeodictyna (1x) | Archaeodictyna minutissima | (Miller, 1958) | 06/06/1958, Pavlov (okr. Břeclav) | 6 | Criticaly endangered | |
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Arctosa (7x) | Arctosa alpigena lamperti | Dahl, 1908 | 08/21/1961, Kvilda | 11 | Strongly endangered | |
| Arctosa cinerea | (Fabricius, 1777) | 1859, Praha, č. o. Praha 1 | 31 | Criticaly endangered | ||
| Arctosa figurata | (Simon, 1876) | 05/26/1959, Srbsko | 43 | Endangered | ||
| Arctosa leopardus | (Sundevall, 1833) | 11/23/1873, Františkovy Lázně | 82 | Endangered | ||
| Arctosa lutetiana | (Simon, 1876) | 1894, Praha, č. o. Praha 4 | 33 | Endangered | ||
| Arctosa maculata | (Hahn, 1822) | 1866, Jílové | 28 | Strongly endangered | ||
| Arctosa perita | (Latreille, 1799) | 11/23/1873, Františkovy Lázně | 20 | Strongly endangered | ||
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Argenna (1x) | Argenna subnigra | (O. Pickard-Cambridge, 1861) | 1940, Senorady | 46 | Not endangered | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Argiope (1x) | Argiope bruennichi | (Scopoli, 1772) | 07/01/1952, Břeclav | 304 | Not endangered | |
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Argyroneta (1x) | Argyroneta aquatica | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 60 | Endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Asagena (1x) | Asagena phalerata | (Panzer, 1801) | 1859, Praha, č. o. Praha 1 | 105 | Not endangered | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Asianellus (1x) | Asianellus festivus | (C. L. Koch, 1834) | 11/23/1873, Františkovy Lázně | 61 | Almost threatened | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Asthenargus (3x) | Asthenargus helveticus | Schenkel, 1936 | 08/15/1934, Hatín, č. o. Roseč | 66 | Not endangered | |
| Asthenargus paganus | (Simon, 1884) | 1952, Jablunkov, č. o. Horní Lomná | 21 | Not endangered | ||
| Asthenargus perforatus | Schenkel, 1929 | 1949, Sobotín, č. o. Klepáčov | 9 | Almost threatened | ||
Family Sclerosomatidae (9x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Astrobunus (1x) | Astrobunus laevipes | (Canestrini, 1872) | 08/25/1996, Tuchořice, č. o. Lipno | 21 | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Attulus (11x) | Attulus atricapillus | (Simon, 1882) | 07/14/2007, Světlá pod Ještědem | 1 | Criticaly endangered | |
| Attulus caricis | (Westring, 1861) | 11/23/1873, Františkovy Lázně | 33 | Endangered | ||
| Attulus distinguendus | (Simon, 1868) | 09/07/1956, Doubravník | 12 | Strongly endangered | ||
| Attulus dzieduszyckii | (L. Koch, 1870) | 06/08/1935, Brno, č. o. Brno III | 8 | Strongly endangered | ||
| Attulus floricola | (C. L. Koch, 1837) | 11/23/1873, Františkovy Lázně | 72 | Almost threatened | ||
| Attulus penicillatus | (Simon, 1875) | 1894, Praha, č. o. Praha 5 | 21 | Strongly endangered | ||
| Attulus pubescens | (Fabricius, 1775) | 1859, Praha, č. o. Praha 1 | 93 | Not endangered | ||
| Attulus rupicola | (C. L. Koch, 1837) | 1929, Pec pod Sněžkou | 6 | Almost threatened | ||
| Attulus saltator | (O. Pickard-Cambridge, 1868) | 05/15/1930, Brno, č. o. Brno II | 16 | Endangered | ||
| Attulus terebratus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 8 | Endangered | ||
| Attulus zimmermanni | (Simon, 1877) | 05/25/1961, Tišice, č. o. Kozly | 3 | Criticaly endangered | ||
Family Atypidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Atypus (3x) | Atypus affinis | Eichwald, 1830 | 1938, Rohy | 50 | Almost threatened | |
| Atypus muralis | Bertkau, 1890 | 1898, Praha, č. o. Praha 4 | 16 | Strongly endangered | ||
| Atypus piceus | (Sulzer, 1776) | 07/15/1934, Dobrkov | 41 | Endangered | ||
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Aulonia (1x) | Aulonia albimana | (Walckenaer, 1805) | 1894, Brno, č. o. Brno I | 220 | Not endangered | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Ballus (1x) | Ballus chalybeius | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 134 | Not endangered | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Bassaniodes (1x) | Bassaniodes robustus | (Hahn, 1832) | 1869, Lužná (okr. Rakovník) | 39 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Bathyphantes (8x) | Bathyphantes approximatus | (O. Pickard-Cambridge, 1871) | 08/15/1934, Hatín, č. o. Roseč | 122 | Not endangered | |
| Bathyphantes eumenis buchari | Růžička, 1988 | 05/30/1983, Loučovice | 20 | Not endangered | ||
| Bathyphantes eumenis eumenis | (L. Koch, 1879) | 04/23/1975, Koberovy, č. o. Besedice | 4 | Not endangered | ||
| Bathyphantes gracilis | (Blackwall, 1841) | 08/15/1934, Hatín, č. o. Roseč | 160 | Not endangered | ||
| Bathyphantes nigrinus | (Westring, 1851) | 11/23/1873, Františkovy Lázně | 173 | Not endangered | ||
| Bathyphantes parvulus | (Westring, 1851) | 1940, Mohelno | 119 | Not endangered | ||
| Bathyphantes setiger | F. O. Pickard-Cambridge, 1894 | 08/10/1935, Hatín, č. o. Roseč | 18 | Strongly endangered | ||
| Bathyphantes similis | Kulczyński, 1894 | 1970, Sýkořice | 16 | Not endangered | ||
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Berlandina (1x) | Berlandina cinerea | (Menge, 1872) | 05/25/1961, Tišice, č. o. Kozly | 12 | Strongly endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Bolyphantes (2x) | Bolyphantes alticeps | (Sundevall, 1833) | 11/23/1873, Františkovy Lázně | 92 | Not endangered | |
| Bolyphantes luteolus | (Blackwall, 1833) | 07/31/1946, Branná, č. o. Ostružná | 10 | Endangered | ||
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Brigittea (2x) | Brigittea civica | (Lucas, 1850) | 09/05/1954, Brno, č. o. Brno I | 37 | Not endangered | |
| Brigittea latens | (Fabricius, 1775) | 11/23/1873, Františkovy Lázně | 14 | Endangered | ||
Family Cicurinidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Brommella (1x) | Brommella falcigera | (Balogh, 1935) | 1940, Mohelno | 9 | Strongly endangered | |
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Callilepis (2x) | Callilepis nocturna | (Linnaeus, 1758) | 05/25/1958, Pavlov (okr. Břeclav) | 37 | Endangered | |
| Callilepis schuszteri | (Herman, 1879) | 05/27/1932, Brno, č. o. Brno V | 32 | Endangered | ||
Family Amaurobiidae (4x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Callobius (1x) | Callobius claustrarius | (Hahn, 1833) | 1859, Jílové, č. o. Sněžník | 185 | Not endangered | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Carrhotus (1x) | Carrhotus xanthogramma | (Latreille, 1819) | 1889, Hořovice | 38 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Centromerita (2x) | Centromerita bicolor | (Blackwall, 1833) | 11/23/1873, Františkovy Lázně | 90 | Not endangered | |
| Centromerita concinna | (Thorell, 1875) | 06/22/1958, Hořešovice, č. o. Zichovec | 15 | Not endangered | ||
| Centromerus (11x) | Centromerus arcanus | (O. Pickard-Cambridge, 1873) | 1892, Špindlerův Mlýn | 78 | Not endangered | |
| Centromerus brevipalpus | (Menge, 1866) | 08/15/1935, Hatín, č. o. Roseč | 12 | Almost threatened | ||
| Centromerus cavernarum | (L. Koch, 1872) | 05/15/1940, Kardašova Řečice | 32 | Not endangered | ||
| Centromerus incilium | (L. Koch, 1881) | 1940, Jindřichův Hradec, č. o. Jindřichův Hradec I | 52 | Endangered | ||
| Centromerus levitarsis | (Simon, 1884) | 1949, Borkovice, č. o. Mažice | 24 | Endangered | ||
| Centromerus pabulator | (O. Pickard-Cambridge, 1875) | 1875, Pec pod Sněžkou | 56 | Not endangered | ||
| Centromerus prudens | (O. Pickard-Cambridge, 1873) | 03/21/1972, Kokořín | 3 | Criticaly endangered | ||
| Centromerus sellarius | (Simon, 1884) | 1952, Jablunkov, č. o. Horní Lomná | 73 | Not endangered | ||
| Centromerus semiater | (L. Koch, 1879) | 02/01/1942, Dráchov | 14 | Strongly endangered | ||
| Centromerus silvicola | (Kulczyński, 1887) | 09/15/1940, Hatín, č. o. Roseč | 30 | Not endangered | ||
| Centromerus sylvaticus | (Blackwall, 1841) | 1892, Harrachov, č. o. Nový Svět | 219 | Not endangered | ||
| Ceratinella (5x) | Ceratinella brevipes | (Westring, 1851) | 08/15/1935, Hatín, č. o. Roseč | 57 | Not endangered | |
| Ceratinella brevis | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 197 | Not endangered | ||
| Ceratinella major | Kulczyński, 1894 | 08/02/1968, Lovosice, č. o. Bílinka | 34 | Almost threatened | ||
| Ceratinella scabrosa | (O. Pickard-Cambridge, 1871) | 08/15/1935, Hatín, č. o. Roseč | 43 | Not endangered | ||
| Ceratinella wideri | (Thorell, 1871) | 08/15/1935, Hatín, č. o. Roseč | 9 | Strongly endangered | ||
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cercidia (1x) | Cercidia prominens | (Westring, 1851) | 11/23/1873, Františkovy Lázně | 67 | Not endangered | |
Family Trachelidae (1x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cetonana (1x) | Cetonana laticeps | (Canestrini, 1868) | 05/07/1932, Brno, č. o. Brno II | 9 | Strongly endangered | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Chalcoscirtus (1x) | Chalcoscirtus brevicymbialis | Wunderlich, 1980 | 05/18/1920, Pavlov (okr. Břeclav) | 10 | Endangered | |
Family Cheiracanthiidae (9x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cheiracanthium (9x) | Cheiracanthium campestre | Lohmander, 1944 | 05/14/1961, Pouzdřany | 25 | Almost threatened | |
| Cheiracanthium effossum | Herman, 1879 | 05/03/1929, Pouzdřany | 7 | Endangered | ||
| Cheiracanthium erraticum | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 107 | Not endangered | ||
| Cheiracanthium mildei | L. Koch, 1864 | 07/15/2010, Havraníky | 18 | Not endangered | ||
| Cheiracanthium montanum | L. Koch, 1877 | 04/10/1961, Brno, č. o. Brno III | 6 | Strongly endangered | ||
| Cheiracanthium oncognathum | Thorell, 1871 | 11/23/1873, Františkovy Lázně | 9 | Endangered | ||
| Cheiracanthium pennyi | O. Pickard-Cambridge, 1873 | 06/05/1983, Pouzdřany | 2 | Strongly endangered | ||
| Cheiracanthium punctorium | (Villers, 1789) | 1859, Praha, č. o. Praha 1 | 33 | Not endangered | ||
| Cheiracanthium virescens | (Sundevall, 1833) | 06/19/1938, Lužná (okr. Rakovník) | 22 | Almost threatened | ||
Family Cheiridiidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cheiridium (1x) | Cheiridium museorum | (Leach, 1817) | 09/01/2013, Přerov | 2 | ||
Family Chernetidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Chernes (1x) | Chernes hahnii | (C. L. Koch, 1839) | 05/07/2014, Libavá | 3 | ||
Family Chthoniidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Chthonius (2x) | Chthonius fuscimanus | (Simon, 1900) | 07/02/2013, Zborovice | 2 | ||
| Chthonius tetrachelatus | (Preyssler, 1790) | 09/14/2009, Hranice | 3 | |||
Family Cicurinidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cicurina (1x) | Cicurina cicur | (Fabricius, 1793) | 1886, Železná Ruda | 211 | Not endangered | |
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Civizelotes (3x) | Civizelotes caucasius | (L. Koch, 1866) | 1998, Podmolí | 1 | Criticaly endangered | |
| Civizelotes gracilis | (Canestrini, 1868) | 05/29/2002, Moravská Nová Ves | 12 | Strongly endangered | ||
| Civizelotes pygmaeus | (Miller, 1943) | 1940, Mohelno | 29 | Endangered | ||
Family Clubionidae (24x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Clubiona (22x) | Clubiona alpicola | Kulczyński, 1882 | 1875, Špindlerův Mlýn | 14 | Not endangered | |
| Clubiona brevipes | Blackwall, 1841 | 11/23/1873, Františkovy Lázně | 48 | Almost threatened | ||
| Clubiona caerulescens | L. Koch, 1867 | 1894, Všenory | 67 | Not endangered | ||
| Clubiona comta | C. L. Koch, 1839 | 11/23/1873, Františkovy Lázně | 76 | Not endangered | ||
| Clubiona corticalis | (Walckenaer, 1802) | 11/23/1873, Františkovy Lázně | 9 | Strongly endangered | ||
| Clubiona diversa | O. Pickard-Cambridge, 1862 | 1929, Lednice | 66 | Almost threatened | ||
| Clubiona frutetorum | L. Koch, 1867 | 11/23/1873, Františkovy Lázně | 25 | Almost threatened | ||
| Clubiona germanica | Thorell, 1871 | 11/23/1873, Františkovy Lázně | 28 | Endangered | ||
| Clubiona juvenis | Simon, 1878 | 07/10/1988, Sedlec (okr. Břeclav) | 8 | Criticaly endangered | ||
| Clubiona kulczynskii | Lessert, 1905 | 1949, Sobotín, č. o. Klepáčov | 19 | Endangered | ||
| Clubiona lutescens | Westring, 1851 | 11/23/1873, Františkovy Lázně | 179 | Not endangered | ||
| Clubiona marmorata | L. Koch, 1866 | 1894, Brno, č. o. Brno I | 19 | Endangered | ||
| Clubiona neglecta | O. Pickard-Cambridge, 1862 | 1886, Strážný | 98 | Not endangered | ||
| Clubiona pallidula | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 112 | Not endangered | ||
| Clubiona phragmitis | C. L. Koch, 1843 | 11/23/1873, Františkovy Lázně | 88 | Not endangered | ||
| Clubiona reclusa | O. Pickard-Cambridge, 1863 | 11/23/1873, Františkovy Lázně | 169 | Not endangered | ||
| Clubiona similis | L. Koch, 1867 | 1940, Mohelno | 5 | Criticaly endangered | ||
| Clubiona stagnatilis | Kulczyński, 1897 | 1941, Rakovník, č. o. Rakovník I | 108 | Not endangered | ||
| Clubiona subsultans | Thorell, 1875 | 11/23/1873, Františkovy Lázně | 71 | Almost threatened | ||
| Clubiona subtilis | L. Koch, 1867 | 1941, Lišany | 48 | Almost threatened | ||
| Clubiona terrestris | Westring, 1851 | 11/23/1873, Františkovy Lázně | 148 | Not endangered | ||
| Clubiona trivialis | C. L. Koch, 1843 | 11/23/1873, Františkovy Lázně | 77 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cnephalocotes (1x) | Cnephalocotes obscurus | (Blackwall, 1834) | 11/23/1873, Františkovy Lázně | 73 | Not endangered | |
Family Agelenidae (13x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Coelotes (2x) | Coelotes atropos | (Walckenaer, 1830) | 1875, Špindlerův Mlýn | 21 | Almost threatened | |
| Coelotes terrestris | (Wider, 1834) | 1859, Praha, č. o. Praha 1 | 284 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Collinsia (1x) | Collinsia distincta | (Simon, 1884) | 1962, Náklo | 7 | Strongly endangered | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Coriarachne (1x) | Coriarachne depressa | (C. L. Koch, 1837) | 11/23/1873, Františkovy Lázně | 57 | Almost threatened | |
Family Oonopidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cortestina (1x) | Cortestina thaleri | Knoflach, 2009 | 10/08/2022, Plzeň | 1 | ||
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cozyptila (1x) | Cozyptila blackwalli | (Simon, 1875) | 1934, Pouzdřany | 14 | Endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Crustulina (1x) | Crustulina guttata | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 95 | Not endangered | |
Family Cybaeidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cryphoeca (1x) | Cryphoeca silvicola | (C. L. Koch, 1834) | 11/23/1873, Františkovy Lázně | 123 | Not endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cryptachaea (1x) | Cryptachaea riparia | (Blackwall, 1834) | 1941, Mohelno | 13 | Not endangered | |
Family Cybaeidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cybaeus (1x) | Cybaeus angustiarum | L. Koch, 1868 | 1892, Harrachov, č. o. Nový Svět | 117 | Not endangered | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Cyclosa (2x) | Cyclosa conica | (Pallas, 1772) | 1859, Praha, č. o. Praha 1 | 147 | Not endangered | |
| Cyclosa oculata | (Walckenaer, 1802) | 1941, Křivoklát | 28 | Endangered | ||
Family Dysderidae (9x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Dasumia (1x) | Dasumia carpatica | (Kulczyński, 1882) | 05/15/1997, Nový Jičín, č. o. Žilina | 11 | Strongly endangered | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Dendryphantes (2x) | Dendryphantes hastatus | (Clerck, 1757) | 11/23/1873, Františkovy Lázně | 25 | Almost threatened | |
| Dendryphantes rudis | (Sundevall, 1833) | 1859, Praha, č. o. Praha 1 | 74 | Not endangered | ||
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Diaea (2x) | Diaea dorsata | (Fabricius, 1777) | 1859, Praha, č. o. Praha 1 | 204 | Not endangered | |
| Diaea livens | Simon, 1876 | 06/10/1961, Třeboň, č. o. Branná | 13 | Strongly endangered | ||
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Dictyna (4x) | Dictyna arundinacea | (Linnaeus, 1758) | 1859, Praha, č. o. Praha 1 | 154 | Not endangered | |
| Dictyna pusilla | Thorell, 1856 | 11/23/1873, Františkovy Lázně | 94 | Not endangered | ||
| Dictyna szaboi | Chyzer, 1891 | 06/04/1996, Bzenec | 1 | Criticaly endangered | ||
| Dictyna uncinata | Thorell, 1856 | 1929, Písek (okr. Písek), č. o. Nový Dvůr | 119 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Dicymbium (2x) | Dicymbium nigrum | (Blackwall, 1834) | 11/23/1873, Františkovy Lázně | 140 | Not endangered | |
| Dicymbium tibiale | (Blackwall, 1836) | 1892, Harrachov, č. o. Nový Svět | 53 | Almost threatened | ||
| Diplocentria (1x) | Diplocentria bidentata | (Emerton, 1882) | 09/16/1971, Litoměřice, č. o. Kamýk | 10 | Endangered | |
| Diplocephalus (6x) | Diplocephalus cristatus | (Blackwall, 1833) | 11/23/1873, Františkovy Lázně | 125 | Not endangered | |
| Diplocephalus dentatus | Tullgren, 1955 | 05/20/1958, Lednice | 3 | Strongly endangered | ||
| Diplocephalus helleri | (L. Koch, 1869) | 1892, Špindlerův Mlýn | 27 | Not endangered | ||
| Diplocephalus latifrons | (O. Pickard-Cambridge, 1863) | 11/23/1873, Františkovy Lázně | 163 | Not endangered | ||
| Diplocephalus permixtus | (O. Pickard-Cambridge, 1871) | 1949, Borkovice, č. o. Mažice | 25 | Almost threatened | ||
| Diplocephalus picinus | (Blackwall, 1841) | 08/15/1934, Hatín, č. o. Roseč | 159 | Not endangered | ||
| Diplostyla (1x) | Diplostyla concolor | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 276 | Not endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Dipoena (4x) | Dipoena braccata | (C. L. Koch, 1841) | 1940, Mohelno | 7 | Endangered | |
| Dipoena erythropus | (Simon, 1881) | 06/20/1967, Pouzdřany | 7 | Criticaly endangered | ||
| Dipoena melanogaster | (C. L. Koch, 1837) | 1889, Křivoklát | 91 | Not endangered | ||
| Dipoena nigroreticulata | (Simon, 1880) | 06/20/1958, Lednice | 6 | Strongly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Dismodicus (2x) | Dismodicus bifrons | (Blackwall, 1841) | 08/15/1934, Hatín, č. o. Roseč | 132 | Not endangered | |
| Dismodicus elevatus | (C. L. Koch, 1838) | 1894, Řevnice | 42 | Almost threatened | ||
Family Dolomedidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Dolomedes (2x) | Dolomedes fimbriatus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 67 | Endangered | |
| Dolomedes plantarius | (Clerck, 1757) | 08/30/1958, Doksy (okr. Č. Lípa), č. o. Břehyně | 19 | Criticaly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Donacochara (1x) | Donacochara speciosa | (Thorell, 1875) | 08/19/1955, Šakvice | 38 | Almost threatened | |
Family Liocranidae (10x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Drapeta (1x) | Drapeta rutilans | (Thorell, 1875) | 1894, Bílina | 10 | Strongly endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Drapetisca (1x) | Drapetisca socialis | (Sundevall, 1833) | 1859, Praha, č. o. Praha 1 | 129 | Not endangered | |
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Drassodes (3x) | Drassodes cupreus | (Blackwall, 1834) | 1894, Praha, č. o. Praha 5 | 64 | Almost threatened | |
| Drassodes lapidosus | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 149 | Not endangered | ||
| Drassodes pubescens | (Thorell, 1856) | 11/23/1873, Františkovy Lázně | 167 | Not endangered | ||
| Drassyllus (5x) | Drassyllus lutetianus | (L. Koch, 1866) | 06/24/1958, Hatín, č. o. Roseč | 103 | Not endangered | |
| Drassyllus praeficus | (L. Koch, 1866) | 11/23/1873, Františkovy Lázně | 118 | Not endangered | ||
| Drassyllus pumilus | (C. L. Koch, 1839) | 1940, Mohelno | 36 | Strongly endangered | ||
| Drassyllus pusillus | (C. L. Koch, 1833) | 11/23/1873, Františkovy Lázně | 172 | Not endangered | ||
| Drassyllus villicus | (Thorell, 1875) | 05/27/1932, Brno, č. o. Brno V | 47 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Drepanotylus (1x) | Drepanotylus uncatus | (O. Pickard-Cambridge, 1873) | 1949, Borkovice, č. o. Mažice | 49 | Almost threatened | |
Family Dysderidae (9x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Dysdera (5x) | Dysdera cechica | Řezáč, 2018 | 1894, Brno, č. o. Brno I | 37 | Not endangered | |
| Dysdera crocata | C. L. Koch, 1838 | 10/06/2002, Mikulov (okr. Břeclav), č. o. Mikulov | 5 | Not endangered | ||
| Dysdera erythrina | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 62 | Not endangered | ||
| Dysdera hungarica | Kulczyński, 1897 | 10/15/1993, Sedlec (okr. Břeclav) | 9 | Not endangered | ||
| Dysdera moravica | Řezáč, 2014 | 1979, Ochoz u Brna | 11 | Almost threatened | ||
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Ebrechtella (1x) | Ebrechtella tricuspidata | (Fabricius, 1775) | 05/17/1936, Pouzdřany | 82 | Not endangered | |
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Echemus (1x) | Echemus angustifrons | (Westring, 1861) | 06/15/1936, Mohelno | 18 | Endangered | |
Family Phalangiidae (12x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Egaenus (1x) | Egaenus convexus | (C. L. Koch, 1835) | 06/08/2009, Žítková | 7 | ||
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Emblyna (1x) | Emblyna mitis | (Thorell, 1875) | 05/21/1966, Čelákovice, č. o. Sedlčánky | 6 | Endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Enoplognatha (6x) | Enoplognatha bryjai | Řezáč, 2016 | 07/01/2020, Dubňany | 2 | ||
| Enoplognatha caricis | (Fickert, 1876) | 06/21/1995, Dubá | 5 | Criticaly endangered | ||
| Enoplognatha latimana | Hippa & Oksala, 1982 | 07/01/1973, Huntířov | 50 | Not endangered | ||
| Enoplognatha mordax | (Thorell, 1875) | 06/09/1973, Třebechovice pod Orebem | 2 | Criticaly endangered | ||
| Enoplognatha ovata | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 260 | Not endangered | ||
| Enoplognatha thoracica | (Hahn, 1833) | 1894, Roztoky | 120 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Entelecara (4x) | Entelecara acuminata | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 92 | Not endangered | |
| Entelecara congenera | (O. Pickard-Cambridge, 1879) | 1940, Mohelno | 78 | Not endangered | ||
| Entelecara erythropus | (Westring, 1851) | 11/23/1873, Františkovy Lázně | 45 | Not endangered | ||
| Entelecara flavipes | (Blackwall, 1834) | 06/24/1970, Pavlov u Dolních Věstonic | 18 | Almost threatened | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Episinus (2x) | Episinus angulatus | (Blackwall, 1836) | 08/15/1958, Lednice | 89 | Not endangered | |
| Episinus truncatus | Latreille, 1809 | 1859, Praha, č. o. Praha 1 | 48 | Almost threatened | ||
Family Agelenidae (13x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Eratigena (2x) | Eratigena agrestis | (Walckenaer, 1802) | 08/27/1960, Praha, č. o. Praha 5 | 64 | Not endangered | |
| Eratigena atrica | (C. L. Koch, 1843) | 11/23/1873, Františkovy Lázně | 83 | Not endangered | ||
Family Eresidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Eresus (3x) | Eresus kollari | Rossi, 1846 | 1866, Ctiněves | 34 | Endangered | |
| Eresus moravicus | Řezáč, 2008 | 10/15/1966, Dolní Kounice | 8 | Criticaly endangered | ||
| Eresus sandaliatus | (Martini & Goeze, 1778) | 06/12/1982, Kadaň, č. o. Úhošťany | 5 | Criticaly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Erigone (4x) | Erigone atra | Blackwall, 1833 | 11/23/1873, Františkovy Lázně | 277 | Not endangered | |
| Erigone cristatopalpus | Simon, 1884 | 08/10/2003, Karlova Studánka | 1 | |||
| Erigone dentipalpis | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 210 | Not endangered | ||
| Erigone jaegeri | Baehr, 1984 | 06/11/1973, Záměl | 1 | Criticaly endangered | ||
| Erigonella (2x) | Erigonella hiemalis | (Blackwall, 1841) | 11/23/1873, Františkovy Lázně | 91 | Not endangered | |
| Erigonella ignobilis | (O. Pickard-Cambridge, 1871) | 11/23/1873, Františkovy Lázně | 26 | Endangered | ||
| Erigonoplus (3x) | Erigonoplus foveatus | (Dahl, 1912) | 06/04/1996, Bzenec | 2 | Criticaly endangered | |
| Erigonoplus globipes | (L. Koch, 1872) | 05/05/1966, Louny, č. o. Raná | 8 | Strongly endangered | ||
| Erigonoplus jarmilae | (Miller, 1943) | 1940, Mohelno | 22 | Endangered | ||
Family Mimetidae (4x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Ero (4x) | Ero aphana | (Walckenaer, 1802) | 1894, Brno, č. o. Brno III | 55 | Almost threatened | |
| Ero cambridgei | Kulczyński, 1911 | 07/29/1973, Krásná Hora nad Vltavou, č. o. Krašovice | 18 | Not endangered | ||
| Ero furcata | (Villers, 1789) | 11/23/1873, Františkovy Lázně | 151 | Not endangered | ||
| Ero tuberculata | (De Geer, 1778) | 11/23/1873, Františkovy Lázně | 18 | Strongly endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Euophrys (1x) | Euophrys frontalis | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 171 | Not endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Euryopis (4x) | Euryopis flavomaculata | (C. L. Koch, 1836) | 08/15/1934, Hatín, č. o. Roseč | 138 | Not endangered | |
| Euryopis laeta | (Westring, 1861) | 04/10/1963, Pouzdřany | 9 | Strongly endangered | ||
| Euryopis quinqueguttata | Thorell, 1875 | 1940, Mohelno | 15 | Strongly endangered | ||
| Euryopis saukea | Levi, 1951 | 04/20/1963, Pouzdřany | 4 | Criticaly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Evansia (1x) | Evansia merens | O. Pickard-Cambridge, 1901 | 1949, Karlova Studánka | 8 | Endangered | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Evarcha (3x) | Evarcha arcuata | (Clerck, 1757) | 11/23/1873, Františkovy Lázně | 281 | Not endangered | |
| Evarcha falcata | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 212 | Not endangered | ||
| Evarcha laetabunda | (C. L. Koch, 1846) | 1931, Brno, č. o. Brno III | 40 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Floronia (1x) | Floronia bucculenta | (Clerck, 1757) | 1889, Křivoklát | 93 | Not endangered | |
| Formiphantes (1x) | Formiphantes lephthyphantiformis | (Strand, 1907) | 1949, Karlova Studánka | 13 | Not endangered | |
| Frontinellina (1x) | Frontinellina frutetorum | (C. L. Koch, 1835) | 1940, Mohelno | 14 | Strongly endangered | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Gibbaranea (4x) | Gibbaranea bituberculata | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 4 | 49 | Almost threatened | |
| Gibbaranea gibbosa | (Walckenaer, 1802) | 11/30/1972, Prasek | 46 | Endangered | ||
| Gibbaranea omoeda | (Thorell, 1870) | 1941, Lišany | 29 | Endangered | ||
| Gibbaranea ullrichi | (Hahn, 1835) | 04/23/2023, Bzenec | 1 | Criticaly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Glyphesis (1x) | Glyphesis servulus | (Simon, 1881) | 06/17/1978, Ústí nad Labem, č. o. Brná nad Labem | 6 | Strongly endangered | |
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Gnaphosa (9x) | Gnaphosa badia | (L. Koch, 1866) | 10/03/1959, Železná Ruda, č. o. Špičák | 5 | Strongly endangered | |
| Gnaphosa bicolor | (Hahn, 1833) | 1894, Praha, č. o. Praha 5 | 34 | Endangered | ||
| Gnaphosa lucifuga | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 45 | Almost threatened | ||
| Gnaphosa lugubris | (C. L. Koch, 1839) | 1894, Bílovice nad Svitavou | 33 | Almost threatened | ||
| Gnaphosa microps | Holm, 1939 | 08/21/1961, Kvilda | 6 | Strongly endangered | ||
| Gnaphosa modestior | Kulczyński, 1897 | 05/11/2018, Mikulov | 5 | Criticaly endangered | ||
| Gnaphosa montana | (L. Koch, 1866) | 08/08/1935, Pavlov (okr. Břeclav) | 39 | Endangered | ||
| Gnaphosa nigerrima | L. Koch, 1877 | 09/17/1942, Soběslav, č. o. Soběslav I | 14 | Strongly endangered | ||
| Gnaphosa opaca | Herman, 1879 | 1894, Praha, č. o. Praha 4 | 22 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Gnathonarium (1x) | Gnathonarium dentatum | (Wider, 1834) | 08/15/1934, Hatín, č. o. Roseč | 81 | Not endangered | |
| Gonatium (4x) | Gonatium hilare | (Thorell, 1875) | 08/15/1934, Hatín, č. o. Roseč | 11 | Strongly endangered | |
| Gonatium paradoxum | (L. Koch, 1869) | 08/15/1934, Hatín, č. o. Roseč | 34 | Almost threatened | ||
| Gonatium rubellum | (Blackwall, 1841) | 1859, Praha, č. o. Praha 1 | 84 | Not endangered | ||
| Gonatium rubens | (Blackwall, 1833) | 11/23/1873, Františkovy Lázně | 19 | Almost threatened | ||
| Gongylidiellum (4x) | Gongylidiellum edentatum | Miller, 1951 | 1949, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 23 | Endangered | |
| Gongylidiellum latebricola | (O. Pickard-Cambridge, 1871) | 1930, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 101 | Not endangered | ||
| Gongylidiellum murcidum | Simon, 1884 | 07/23/1961, Třeboň, č. o. Třeboň II | 20 | Endangered | ||
| Gongylidiellum vivum | (O. Pickard-Cambridge, 1875) | 1936, Lužná (okr. Rakovník) | 81 | Almost threatened | ||
| Gongylidium (1x) | Gongylidium rufipes | (Linnaeus, 1758) | 11/23/1873, Františkovy Lázně | 121 | Not endangered | |
Family Sclerosomatidae (9x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Gyas (1x) | Gyas titanus | (Simon, 1879) | 08/10/2011, Lhota u Vsetína | 5 | ||
Family Hahniidae (7x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Hahnia (4x) | Hahnia helveola | Simon, 1875 | 05/15/1940, Kardašova Řečice | 33 | Almost threatened | |
| Hahnia nava | (Blackwall, 1841) | 11/23/1873, Františkovy Lázně | 92 | Not endangered | ||
| Hahnia ononidum | Simon, 1875 | 1933, Lužná (okr. Rakovník) | 25 | Almost threatened | ||
| Hahnia pusilla | C. L. Koch, 1841 | 05/11/1900, Sloup | 111 | Not endangered | ||
| Hahniharmia (1x) | Hahniharmia picta | (Kulczyński, 1897) | 09/04/1961, Lednice | 2 | Criticaly endangered | |
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Haplodrassus (9x) | Haplodrassus bohemicus | Miller & Buchar, 1977 | 05/25/1962, Louny, č. o. Raná | 2 | Criticaly endangered | |
| Haplodrassus cognatus | (Westring, 1861) | 1941, Lužná (okr. Rakovník) | 15 | Endangered | ||
| Haplodrassus dalmatensis | (L. Koch, 1866) | 1941, Mohelno | 24 | Endangered | ||
| Haplodrassus kulczynskii | Lohmander, 1942 | 1949, Mohelno | 28 | Endangered | ||
| Haplodrassus moderatus | (Kulczyński, 1897) | 05/21/1980, Stožec, č. o. Dobrá | 6 | Strongly endangered | ||
| Haplodrassus signifer | (C. L. Koch, 1839) | 11/23/1873, Františkovy Lázně | 200 | Not endangered | ||
| Haplodrassus silvestris | (Blackwall, 1833) | 1894, Nový Jáchymov | 144 | Not endangered | ||
| Haplodrassus soerenseni | (Strand, 1900) | 1970, Sýkořice | 35 | Almost threatened | ||
| Haplodrassus umbratilis | (L. Koch, 1866) | 06/19/1932, Pavlov (okr. Břeclav) | 67 | Not endangered | ||
Family Dysderidae (9x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Harpactea (3x) | Harpactea hombergi | (Scopoli, 1763) | 1929, Křivoklát | 94 | Not endangered | |
| Harpactea lepida | (C. L. Koch, 1838) | 1886, Železná Ruda | 214 | Not endangered | ||
| Harpactea rubicunda | (C. L. Koch, 1838) | 1859, Praha, č. o. Praha 1 | 158 | Not endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Hasarius (1x) | Hasarius adansoni | (Audouin, 1826) | 1971, Praha, č. o. Praha 2 | 5 | Not endangered | |
| Heliophanus (8x) | Heliophanus aeneus | (Hahn, 1832) | 1859, Praha, č. o. Praha 1 | 45 | Almost threatened | |
| Heliophanus auratus | C. L. Koch, 1835 | 1894, Brno, č. o. Brno IV | 40 | Almost threatened | ||
| Heliophanus cupreus | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 175 | Not endangered | ||
| Heliophanus dampfi | Schenkel, 1923 | 1949, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 24 | Endangered | ||
| Heliophanus dubius | C. L. Koch, 1835 | 1859, Praha, č. o. Praha 1 | 43 | Not endangered | ||
| Heliophanus flavipes | (Hahn, 1832) | 04/03/1930, Pouzdřany | 104 | Not endangered | ||
| Heliophanus lineiventris | Simon, 1868 | 1958, Pouzdřany | 4 | Criticaly endangered | ||
| Heliophanus patagiatus | Thorell, 1875 | 07/24/2002, Morávka, č. o. Vyšní Lhoty | 3 | Criticaly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Helophora (1x) | Helophora insignis | (Blackwall, 1841) | 11/23/1873, Františkovy Lázně | 99 | Not endangered | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Heriaeus (2x) | Heriaeus graminicola | (Doleschall, 1852) | 06/20/1958, Lednice | 8 | Almost threatened | |
| Heriaeus oblongus | Simon, 1918 | 1894, Praha, č. o. Praha 4 | 7 | Strongly endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Heterotheridion (1x) | Heterotheridion nigrovariegatum | (Simon, 1873) | 1894, Praha, č. o. Praha 4 | 28 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Hilaira (1x) | Hilaira excisa | (O. Pickard-Cambridge, 1871) | 1952, Jablunkov, č. o. Horní Lomná | 54 | Not endangered | |
Family Agelenidae (13x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Histopona (1x) | Histopona torpida | (C. L. Koch, 1837) | 11/23/1873, Františkovy Lázně | 228 | Not endangered | |
Family Pholcidae (7x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Holocnemus (1x) | Holocnemus pluchei | (Scopoli, 1763) | 01/26/2014, Brno | 10 | Not endangered | |
Family Nesticidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Howaia (1x) | Howaia mogera | (Yaginuma, 1972) | 01/12/2016, Olomouc | 2 | ||
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Hygrolycosa (1x) | Hygrolycosa rubrofasciata | (Ohlert, 1865) | 05/08/1961, Chlum u Třeboně, č. o. Lutová | 27 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Hylyphantes (1x) | Hylyphantes graminicola | (Sundevall, 1830) | 1859, Praha, č. o. Praha 1 | 41 | Almost threatened | |
| Hypomma (3x) | Hypomma bituberculatum | (Wider, 1834) | 1940, Kladeruby nad Oslavou | 89 | Not endangered | |
| Hypomma cornutum | (Blackwall, 1833) | 11/23/1873, Františkovy Lázně | 33 | Almost threatened | ||
| Hypomma fulvum | (Bösenberg, 1902) | 07/14/1965, Třeboň, č. o. Přeseka | 3 | Missing | ||
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Hypsosinga (4x) | Hypsosinga albovittata | (Westring, 1851) | 11/23/1873, Františkovy Lázně | 41 | Almost threatened | |
| Hypsosinga heri | (Hahn, 1831) | 1929, Písek (okr. Písek), č. o. Nový Dvůr | 36 | Endangered | ||
| Hypsosinga pygmaea | (Sundevall, 1831) | 11/23/1873, Františkovy Lázně | 53 | Almost threatened | ||
| Hypsosinga sanguinea | (C. L. Koch, 1844) | 1886, Srní, č. o. Modrava | 127 | Not endangered | ||
Family Uloboridae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Hyptiotes (1x) | Hyptiotes paradoxus | (C. L. Koch, 1834) | 1866, Děčín, č. o. Děčín I | 57 | Not endangered | |
Family Hahniidae (7x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Iberina (1x) | Iberina difficilis | (Harm, 1966) | 1930, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 27 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Improphantes (3x) | Improphantes geniculatus | (Kulczyński, 1898) | 03/01/1961, Praha, č. o. Praha 5 | 12 | Strongly endangered | |
| Improphantes improbulus | (Simon, 1929) | 1939, Adamov | 3 | Endangered | ||
| Improphantes nitidus | (Thorell, 1875) | 08/15/1934, Hatín, č. o. Roseč | 35 | Almost threatened | ||
| Incestophantes (1x) | Incestophantes crucifer | (Menge, 1866) | 11/23/1873, Františkovy Lázně | 10 | Endangered | |
Family Agelenidae (13x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Inermocoelotes (1x) | Inermocoelotes inermis | (L. Koch, 1855) | 1889, Hořovice | 195 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Ipa (2x) | Ipa keyserlingi | (Ausserer, 1867) | 1889, Křivoklát | 37 | Endangered | |
| Ipa terrenus | (L. Koch, 1879) | 04/08/1957, Pouzdřany | 7 | Criticaly endangered | ||
Family Ischyropsalididae (1x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Ischyropsalis (1x) | Ischyropsalis hellwigi | (Panzer, 1794) | 10/05/1981, Trusnov | 13 | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Kaestneria (3x) | Kaestneria dorsalis | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 69 | Almost threatened | |
| Kaestneria pullata | (O. Pickard-Cambridge, 1863) | 1969, Sedlec (okr. Břeclav) | 22 | Endangered | ||
| Kaestneria torrentum | (Kulczyński, 1882) | 07/31/1946, Bělá pod Pradědem, č. o. Domašov | 3 | Endangered | ||
| Kratochviliella (1x) | Kratochviliella bicapitata | Miller, 1938 | 06/15/1934, Lužná (okr. Rakovník) | 12 | Endangered | |
| Labulla (1x) | Labulla thoracica | (Wider, 1834) | 08/06/1892, Tanvald | 59 | Not endangered | |
Family Phalangiidae (12x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Lacinius (3x) | Lacinius dentiger | (C. L. Koch, 1848) | 09/16/2015, Huslenky | 38 | ||
| Lacinius ephippiatus | (C. L. Koch, 1835) | 06/07/1981, Trusnov | 19 | |||
| Lacinius horridus | (Panzer, 1794) | 11/30/2005, Kadaň | 8 | |||
Family Chernetidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Lamprochernes (1x) | Lamprochernes chyzeri | (Tömösváry, 1882) | 06/03/2020, Krouna | 1 | ||
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Larinia (1x) | Larinia elegans | Spassky, 1939 | 05/08/2020, Pasohlávky | 1 | ||
| Larinioides (5x) | Larinioides cornutus | (Clerck, 1757) | 08/24/1967, Lomnice nad Lužnicí, č. o. Lužnice | 26 | Not endangered | |
| Larinioides ixobolus | (Thorell, 1873) | 1894, Brno, č. o. Brno I | 26 | Not endangered | ||
| Larinioides patagiatus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 72 | Almost threatened | ||
| Larinioides sclopetarius | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 68 | Not endangered | ||
| Larinioides suspicax | (O. Pickard-Cambridge, 1876) | 1859, Panenský Týnec | 106 | Not endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Lasaeola (1x) | Lasaeola tristis | (Hahn, 1833) | 11/23/1873, Františkovy Lázně | 42 | Almost threatened | |
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Lathys (2x) | Lathys humilis | (Blackwall, 1855) | 05/24/1951, Lednice | 35 | Endangered | |
| Lathys stigmatisata | (Menge, 1869) | 1929, Písek (okr. Písek), č. o. Nový Dvůr | 18 | Endangered | ||
Family Sclerosomatidae (9x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Leiobunum (5x) | Leiobunum blackwalli | (Meade, 1861) | 08/20/1996, Vysoká Pec | 3 | ||
| Leiobunum limbatum | L. Koch, 1861 | 10/25/2005, Blatno | 19 | |||
| Leiobunum rotundum | (Latreille, 1798) | 08/22/2008, Horka nad Moravou | 7 | |||
| Leiobunum rupestre | (Herbst, 1799) | 09/10/2012, Lhota u Vsetína | 18 | |||
| Leiobunum sp. A | 10/25/2021, Vlkoš | 2 | ||||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Lepthyphantes (4x) | Lepthyphantes leprosus | (Ohlert, 1865) | 1886, Nýrsko | 96 | Not endangered | |
| Lepthyphantes minutus | (Blackwall, 1833) | 11/23/1873, Františkovy Lázně | 74 | Not endangered | ||
| Lepthyphantes nodifer | Simon, 1884 | 1938, Jindřichův Hradec, č. o. Jindřichův Hradec I | 37 | Almost threatened | ||
| Lepthyphantes notabilis | Kulczyński, 1887 | 1970, Sýkořice | 31 | Not endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Leptorchestes (1x) | Leptorchestes berolinensis | (C. L. Koch, 1846) | 1894, Brno, č. o. Brno IV | 16 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Leptorhoptrum (1x) | Leptorhoptrum robustum | (Westring, 1851) | 1930, Pec pod Sněžkou | 69 | Not endangered | |
| Lessertia (1x) | Lessertia dentichelis | (Simon, 1884) | 04/01/1959, Praha, č. o. Praha 5 | 3 | Almost threatened | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Leviellus (2x) | Leviellus stroemi | (Thorell, 1870) | 11/23/1873, Františkovy Lázně | 22 | Endangered | |
| Leviellus thorelli | (Ausserer, 1871) | 08/19/2009, Břeclav | 3 | Criticaly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Linyphia (2x) | Linyphia hortensis | Sundevall, 1830 | 11/23/1873, Františkovy Lázně | 186 | Not endangered | |
| Linyphia triangularis | (Clerck, 1757) | 1934, Unhošť, č. o. Malé Kyšice | 283 | Not endangered | ||
Family Liocranidae (10x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Liocranoeca (1x) | Liocranoeca striata | (Kulczyński, 1882) | 11/13/1976, Prasek, č. o. Kobylice | 25 | Almost threatened | |
| Liocranum (1x) | Liocranum rupicola | (Walckenaer, 1830) | 1866, Děčín, č. o. Děčín I | 83 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Lophomma (1x) | Lophomma punctatum | (Blackwall, 1841) | 08/15/1935, Hatín, č. o. Roseč | 60 | Almost threatened | |
Family Phalangiidae (12x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Lophopilio (1x) | Lophopilio palpinalis | (Herbst, 1799) | 10/15/2008, Horka nad Moravou | 5 | ||
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Lycosa (1x) | Lycosa singoriensis | (Laxmann, 1770) | 1924, Břeclav | 28 | Almost threatened | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Macaroeris (1x) | Macaroeris nidicolens | (Walckenaer, 1802) | 06/20/1961, Mohelno | 36 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Macrargus (2x) | Macrargus carpenteri | (O. Pickard-Cambridge, 1895) | 10/08/1958, Hořešovice, č. o. Zichovec | 11 | Endangered | |
| Macrargus rufus | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 160 | Not endangered | ||
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Mangora (1x) | Mangora acalypha | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 237 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Mansuphantes (2x) | Mansuphantes arciger | (Kulczyński, 1882) | 1892, Harrachov, č. o. Nový Svět | 10 | Almost threatened | |
| Mansuphantes mansuetus | (Thorell, 1875) | 1933, Lužná (okr. Rakovník) | 105 | Not endangered | ||
| Maro (2x) | Maro lepidus | Casemir, 1961 | 07/08/1953, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 9 | Strongly endangered | |
| Maro minutus | O. Pickard-Cambridge, 1907 | 1949, Borkovice, č. o. Mažice | 19 | Endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Marpissa (4x) | Marpissa muscosa | (Clerck, 1757) | 11/23/1873, Františkovy Lázně | 43 | Almost threatened | |
| Marpissa nivoyi | (Lucas, 1846) | 10/15/1945, Mohelno | 25 | Endangered | ||
| Marpissa pomatia | (Walckenaer, 1802) | 09/15/1932, Velký Osek | 6 | Strongly endangered | ||
| Marpissa radiata | (Grube, 1859) | 1940, Mohelno | 27 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Maso (2x) | Maso gallicus | Simon, 1894 | 06/12/1973, Týniště nad Orlicí | 1 | Criticaly endangered | |
| Maso sundevalli | (Westring, 1851) | 11/23/1873, Františkovy Lázně | 158 | Not endangered | ||
Family Cybaeidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Mastigusa (1x) | Mastigusa arietina | (Thorell, 1871) | 11/23/1873, Františkovy Lázně | 13 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Mecopisthes (1x) | Mecopisthes silus | (O. Pickard-Cambridge, 1873) | 1930, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 31 | Almost threatened | |
| Mecynargus (1x) | Mecynargus morulus | (O. Pickard-Cambridge, 1873) | 10/02/1962, Vítkovice | 2 | Strongly endangered | |
| Megalepthyphantes (3x) | Megalepthyphantes collinus | (L. Koch, 1872) | 09/15/1961, Praha, č. o. Praha 5 | 11 | Strongly endangered | |
| Megalepthyphantes nebulosus | (Sundevall, 1830) | 1859, Praha, č. o. Praha 1 | 41 | Not endangered | ||
| Megalepthyphantes pseudocollinus | Saaristo, 1997 | 10/29/1994, Milovice (okr. Břeclav) | 6 | Almost threatened | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Mendoza (1x) | Mendoza canestrinii | (Ninni, 1868) | 06/08/1993, Horní Věstonice | 6 | Strongly endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Mermessus (1x) | Mermessus trilobatus | (Emerton, 1882) | 01/06/2007, Kadaň, č. o. Úhošťany | 51 | Not endangered | |
Family Tetragnathidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Meta (1x) | Meta menardi | (Latreille, 1804) | 1929, Dubá, č. o. Korce | 68 | Not endangered | |
| Metellina (3x) | Metellina mengei | (Blackwall, 1869) | 11/23/1873, Františkovy Lázně | 173 | Not endangered | |
| Metellina merianae | (Scopoli, 1763) | 1866, Děčín, č. o. Děčín I | 130 | Not endangered | ||
| Metellina segmentata | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 232 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Metopobactrus (2x) | Metopobactrus ascitus | (Kulczyński, 1894) | 1959, Lednice | 6 | Criticaly endangered | |
| Metopobactrus prominulus | (O. Pickard-Cambridge, 1873) | 1940, Mohelno | 18 | Endangered | ||
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Micaria (10x) | Micaria aenea | Thorell, 1871 | 08/04/1951, Kvilda | 3 | Strongly endangered | |
| Micaria dives | (Lucas, 1846) | 04/29/1940, Mohelno | 16 | Strongly endangered | ||
| Micaria formicaria | (Sundevall, 1831) | 1929, Lány (okr. Rakovník), č. o. Lány | 38 | Endangered | ||
| Micaria fulgens | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 92 | Almost threatened | ||
| Micaria guttulata | (C. L. Koch, 1839) | 08/15/1940, Mohelno | 11 | Strongly endangered | ||
| Micaria micans | (Blackwall, 1858) | 06/20/2010, Libice nad Cidlinou | 23 | Not endangered | ||
| Micaria nivosa | L. Koch, 1866 | 05/28/1942, Borkovice, č. o. Mažice | 10 | Endangered | ||
| Micaria pulicaria | (Sundevall, 1831) | 11/23/1873, Františkovy Lázně | 122 | Not endangered | ||
| Micaria sociabilis | Kulczyński, 1897 | 10/25/1996, Bulhary | 3 | Criticaly endangered | ||
| Micaria subopaca | Westring, 1861 | 11/23/1873, Františkovy Lázně | 37 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Micrargus (4x) | Micrargus apertus | (O. Pickard-Cambridge, 1871) | 06/18/1983, Pec pod Sněžkou | 37 | Not endangered | |
| Micrargus georgescuae | Millidge, 1976 | 08/26/1982, Harrachov | 23 | Not endangered | ||
| Micrargus herbigradus | (Blackwall, 1854) | 1892, Harrachov, č. o. Nový Svět | 237 | Not endangered | ||
| Micrargus subaequalis | (Westring, 1851) | 1940, Mohelno | 59 | Not endangered | ||
Family Mysmenidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Microdipoena (1x) | Microdipoena jobi | (Kraus, 1967) | 07/02/1973, Slapy | 6 | Strongly endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Microlinyphia (2x) | Microlinyphia impigra | (O. Pickard-Cambridge, 1871) | 1970, Pouzdřany | 36 | Endangered | |
| Microlinyphia pusilla | (Sundevall, 1830) | 1866, Turnov | 188 | Not endangered | ||
Family Sparassidae (1x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Micrommata (1x) | Micrommata virescens | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 163 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Microneta (1x) | Microneta viaria | (Blackwall, 1841) | 1886, Nýrsko | 226 | Not endangered | |
| Minicia (1x) | Minicia marginella | (Wider, 1834) | 01/01/1938, Lnáře, č. o. Tchořovice | 29 | Endangered | |
| Minyriolus (1x) | Minyriolus pusillus | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 54 | Not endangered | |
| Mioxena (1x) | Mioxena blanda | (Simon, 1884) | 10/15/1974, Praha, č. o. Praha 7 | 15 | Almost threatened | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Misumena (1x) | Misumena vatia | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 220 | Not endangered | |
Family Phalangiidae (12x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Mitopus (1x) | Mitopus morio | (Fabricius, 1799) | 08/18/1981, Trusnov | 29 | ||
Family Nemastomatidae (5x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Mitostoma (1x) | Mitostoma chrysomelas | (Hermann, 1804) | 07/12/2007, Horka nad Moravou | 9 | ||
Family Pholcidae (7x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Modisimus (1x) | Modisimus culicinus | (Simon, 1893) | 01/02/2016, Praha | 1 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Moebelia (1x) | Moebelia penicillata | (Westring, 1851) | 11/23/1873, Františkovy Lázně | 35 | Not endangered | |
| Mughiphantes (2x) | Mughiphantes mughi | (Fickert, 1875) | 1875, Špindlerův Mlýn | 22 | Not endangered | |
| Mughiphantes pulcher | (Kulczyński, 1881) | 1929, Pec pod Sněžkou | 16 | Almost threatened | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Myrmarachne (1x) | Myrmarachne formicaria | (De Geer, 1778) | 1859, Praha, č. o. Praha 1 | 25 | Endangered | |
Family Sclerosomatidae (9x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Nelima (2x) | Nelima gothica | (Lohmander, 1945) | 10/10/1998, Blatno | 1 | ||
| Nelima semproni | (Szalay, 1951) | 11/03/1994, Liběšice u Žatce | 23 | |||
Family Nemastomatidae (5x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Nemastoma (2x) | Nemastoma lugubre | (Müller, 1776) | 08/18/2000, Přelouč | 39 | ||
| Nemastoma triste | (C. L. Koch, 1835) | 08/30/1998, Jáchymov | 3 | |||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Nematogmus (1x) | Nematogmus sanguinolentus | (Walckenaer, 1841) | 1889, Nový Jáchymov | 37 | Endangered | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Neon (4x) | Neon levis | (Simon, 1871) | 07/14/1985, Skryje | 4 | Criticaly endangered | |
| Neon rayi | (Simon, 1875) | 1940, Mohelno | 12 | Strongly endangered | ||
| Neon reticulatus | (Blackwall, 1853) | 1889, Hořovice | 131 | Not endangered | ||
| Neon valentulus | Falconer, 1912 | 1949, Borkovice, č. o. Mažice | 25 | Endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Neottiura (2x) | Neottiura bimaculata | (Linnaeus, 1767) | 1859, Praha, č. o. Praha 4 | 251 | Not endangered | |
| Neottiura suaveolens | (Simon, 1880) | 1940, Mohelno | 29 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Neriene (5x) | Neriene clathrata | (Sundevall, 1830) | 11/23/1873, Františkovy Lázně | 242 | Not endangered | |
| Neriene emphana | (Walckenaer, 1841) | 1929, Pec pod Sněžkou | 77 | Not endangered | ||
| Neriene montana | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 119 | Not endangered | ||
| Neriene peltata | (Wider, 1834) | 1886, Nýrsko | 92 | Not endangered | ||
| Neriene radiata | (Walckenaer, 1841) | 1886, Železná Ruda | 98 | Not endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Nesticodes (1x) | Nesticodes rufipes | (Lucas, 1846) | 1995, Praha, č. o. Praha 2 | 1 | ||
Family Nesticidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Nesticus (1x) | Nesticus cellulanus | (Clerck, 1757) | 1866, Tisá | 96 | Not endangered | |
Family Dictynidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Nigma (2x) | Nigma flavescens | (Walckenaer, 1830) | 11/23/1873, Františkovy Lázně | 104 | Not endangered | |
| Nigma walckenaeri | (Roewer, 1951) | 1894, Brno, č. o. Brno I | 45 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Notioscopus (1x) | Notioscopus sarcinatus | (O. Pickard-Cambridge, 1873) | 1930, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 47 | Almost threatened | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Nuctenea (2x) | Nuctenea silvicultrix | (C. L. Koch, 1835) | 1886, Strážný | 13 | Strongly endangered | |
| Nuctenea umbratica | (Clerck, 1757) | 1866, Litoměřice, č. o. Litoměřice-Město | 140 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Nusoncus (1x) | Nusoncus nasutus | (Schenkel, 1925) | 06/15/1977, Stožec | 14 | Not endangered | |
| Obscuriphantes (1x) | Obscuriphantes obscurus | (Blackwall, 1841) | 11/23/1873, Františkovy Lázně | 53 | Not endangered | |
| Oedothorax (6x) | Oedothorax agrestis | (Blackwall, 1853) | 1894, Kučeř, č. o. Květov | 85 | Not endangered | |
| Oedothorax apicatus | (Blackwall, 1850) | 11/23/1873, Františkovy Lázně | 176 | Not endangered | ||
| Oedothorax fuscus | (Blackwall, 1834) | 1894, Kučeř, č. o. Květov | 48 | Not endangered | ||
| Oedothorax gibbifer | (Kulczyński, 1882) | 06/10/1973, Skuhrov nad Bělou | 9 | Endangered | ||
| Oedothorax gibbosus | (Blackwall, 1841) | 07/31/1946, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 138 | Not endangered | ||
| Oedothorax retusus | (Westring, 1851) | 1933, Skryje | 140 | Not endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Ohlertidion (1x) | Ohlertidion ohlerti | (Thorell, 1870) | 06/02/1960, Kvilda | 7 | Strongly endangered | |
Family Phalangiidae (12x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Oligolophus (1x) | Oligolophus tridens | (C. L. Koch, 1836) | 08/18/1981, Trusnov | 46 | ||
| Opilio (2x) | Opilio canestrinii | (Thorell, 1876) | 11/06/1993, Chomutov | 75 | ||
| Opilio saxatilis | (C. L. Koch, 1839) | 10/14/2006, Vinaře | 16 | |||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Oreoneta (1x) | Oreoneta tatrica | (Kulczyński, 1915) | 1949, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 15 | Not endangered | |
| Oreonetides (1x) | Oreonetides vaginatus | (Thorell, 1872) | 1875, Pec pod Sněžkou | 6 | Strongly endangered | |
| Oryphantes (1x) | Oryphantes angulatus | (O. Pickard-Cambridge, 1881) | 1949, Borkovice, č. o. Mažice | 11 | Endangered | |
| Ostearius (1x) | Ostearius melanopygius | (O. Pickard-Cambridge, 1880) | 1970, Sýkořice | 47 | Not endangered | |
Family Oxyopidae (1x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Oxyopes (1x) | Oxyopes ramosus | (Martini & Goeze, 1778) | 1859, Praha, č. o. Praha 1 | 50 | Almost threatened | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Ozyptila (8x) | Ozyptila atomaria | (Panzer, 1801) | 1859, Praha, č. o. Praha 1 | 110 | Not endangered | |
| Ozyptila brevipes | (Hahn, 1826) | 1859, Praha, č. o. Praha 1 | 11 | Strongly endangered | ||
| Ozyptila claveata | (Walckenaer, 1837) | 1894, Střelice (okr. Brno-venkov) | 86 | Almost threatened | ||
| Ozyptila praticola | (C. L. Koch, 1837) | 1859, Praha, č. o. Praha 1 | 116 | Not endangered | ||
| Ozyptila pullata | (Thorell, 1875) | 05/03/1930, Brno, č. o. Brno III | 22 | Endangered | ||
| Ozyptila scabricula | (Westring, 1851) | 1940, Mohelno | 49 | Endangered | ||
| Ozyptila simplex | (O. Pickard-Cambridge, 1862) | 06/04/1968, Žehuň, č. o. Choťovice | 24 | Almost threatened | ||
| Ozyptila trux | (Blackwall, 1846) | 11/23/1873, Františkovy Lázně | 169 | Not endangered | ||
Family Tetragnathidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pachygnatha (3x) | Pachygnatha clercki | Sundevall, 1823 | 1894, Brno, č. o. Brno I | 186 | Not endangered | |
| Pachygnatha degeeri | Sundevall, 1830 | 1859, Praha, č. o. Praha 1 | 245 | Not endangered | ||
| Pachygnatha listeri | Sundevall, 1830 | 1859, Praha, č. o. Praha 1 | 228 | Not endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Paidiscura (1x) | Paidiscura pallens | (Blackwall, 1834) | 06/23/1971, Kostomlaty pod Milešovkou | 84 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Palliduphantes (4x) | Palliduphantes alutacius | (Simon, 1884) | 1969, Břeclav, č. o. Charvátská Nová Ves | 75 | Not endangered | |
| Palliduphantes ericaeus | (Blackwall, 1853) | 03/30/2014, Výsluní | 2 | Strongly endangered | ||
| Palliduphantes insignis | (O. Pickard-Cambridge, 1913) | 04/12/1945, Soběslav, č. o. Soběslav I | 30 | Almost threatened | ||
| Palliduphantes pallidus | (O. Pickard-Cambridge, 1871) | 1929, Pec pod Sněžkou | 137 | Not endangered | ||
| Panamomops (4x) | Panamomops affinis | Miller & Kratochvíl, 1939 | 06/01/1939, Jindřichův Hradec, č. o. Jindřichův Hradec I | 22 | Endangered | |
| Panamomops inconspicuus | (Miller & Valešová, 1964) | 05/25/1960, Praha, č. o. Praha 5 | 19 | Strongly endangered | ||
| Panamomops mengei | Simon, 1926 | 1967, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 35 | Not endangered | ||
| Panamomops sulcifrons | (Wider, 1834) | 11/23/1873, Františkovy Lázně | 8 | Endangered | ||
Family Nemastomatidae (5x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Paranemastoma (2x) | Paranemastoma kochi | (Nowicki, 1870) | 08/27/2016, Strání | 3 | ||
| Paranemastoma quadripunctatum | (Perty, 1833) | 08/18/1981, Trusnov | 36 | |||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Parasteatoda (4x) | Parasteatoda lunata | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 134 | Not endangered | |
| Parasteatoda simulans | (Thorell, 1875) | 1866, Mladá Boleslav, č. o. Mladá Boleslav I | 100 | Not endangered | ||
| Parasteatoda tabulata | (Levi, 1980) | 06/04/2015, Přerov | 8 | Not endangered | ||
| Parasteatoda tepidariorum | (C. L. Koch, 1841) | 11/23/1873, Františkovy Lázně | 54 | Not endangered | ||
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pardosa (23x) | Pardosa agrestis | (Westring, 1861) | 1894, Praha, č. o. Praha 5 | 133 | Not endangered | |
| Pardosa alacris | (C. L. Koch, 1833) | 04/19/1959, Hořešovice, č. o. Zichovec | 101 | Not endangered | ||
| Pardosa amentata | (Clerck, 1757) | 1929, Říčany (okr. Praha-vých.), č. o. Říčany | 339 | Not endangered | ||
| Pardosa bifasciata | (C. L. Koch, 1834) | 1894, Brno, č. o. Brno III | 55 | Endangered | ||
| Pardosa ferruginea | (L. Koch, 1870) | 1886, Železná Ruda, č. o. Špičák | 5 | Strongly endangered | ||
| Pardosa hortensis | (Thorell, 1872) | 1894, Střelice (okr. Brno-venkov) | 61 | Not endangered | ||
| Pardosa hyperborea | (Thorell, 1872) | 07/15/1961, Kvilda | 5 | Strongly endangered | ||
| Pardosa lugubris | (Walckenaer, 1802) | 1929, Pec pod Sněžkou | 358 | Not endangered | ||
| Pardosa maisa | Hippa & Mannila, 1982 | 08/12/1969, Valtice | 3 | Criticaly endangered | ||
| Pardosa monticola | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 60 | Almost threatened | ||
| Pardosa morosa | (L. Koch, 1870) | 1894, Davle | 17 | Strongly endangered | ||
| Pardosa nebulosa | (Thorell, 1872) | 05/13/2010, Hodonín | 2 | Criticaly endangered | ||
| Pardosa nigriceps | (Thorell, 1856) | 1929, Pec pod Sněžkou | 32 | Endangered | ||
| Pardosa paludicola | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 67 | Endangered | ||
| Pardosa palustris | (Linnaeus, 1758) | 11/23/1873, Františkovy Lázně | 225 | Not endangered | ||
| Pardosa prativaga | (L. Koch, 1870) | 1892, Harrachov, č. o. Nový Svět | 161 | Not endangered | ||
| Pardosa pullata | (Clerck, 1757) | 11/23/1873, Františkovy Lázně | 294 | Not endangered | ||
| Pardosa riparia | (C. L. Koch, 1833) | 1859, Praha, č. o. Praha 1 | 122 | Not endangered | ||
| Pardosa saltans | Töpfer-Hofmann, 2000 | 05/26/1959, Srbsko | 42 | Not endangered | ||
| Pardosa saltuaria | (L. Koch, 1870) | 1875, Špindlerův Mlýn | 4 | Endangered | ||
| Pardosa sordidata | (Thorell, 1875) | 08/06/1967, Volary | 26 | Strongly endangered | ||
| Pardosa sphagnicola | (Dahl, 1908) | 07/31/1946, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 36 | Endangered | ||
| Pardosa wagleri | (Hahn, 1822) | 1894, Davle | 3 | Criticaly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pelecopsis (3x) | Pelecopsis elongata | (Wider, 1834) | 1859, Praha, č. o. Praha 1 | 48 | Almost threatened | |
| Pelecopsis parallela | (Wider, 1834) | 1936, Červený Kostelec | 31 | Not endangered | ||
| Pelecopsis radicicola | (L. Koch, 1872) | 1892, Harrachov, č. o. Nový Svět | 68 | Not endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pellenes (2x) | Pellenes nigrociliatus | (Simon, 1875) | 1894, Praha, č. o. Praha 5 | 21 | Endangered | |
| Pellenes tripunctatus | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 4 | 49 | Almost threatened | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Peponocranium (2x) | Peponocranium orbiculatum | (O. Pickard-Cambridge, 1882) | 1941, Křivoklát | 20 | Strongly endangered | |
| Peponocranium praeceps | Miller, 1943 | 1940, Senorady | 3 | Strongly endangered | ||
Family Phalangiidae (12x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Phalangium (1x) | Phalangium opilio | Linnaeus, 1758 | 08/18/2000, Přelouč | 97 | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Philaeus (1x) | Philaeus chrysops | (Poda, 1761) | 1889, Hořovice | 33 | Endangered | |
Family Philodromidae (23x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Philodromus (14x) | Philodromus albidus | Kulczyński, 1911 | 1941, Lišany | 82 | Not endangered | |
| Philodromus aureolus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 135 | Not endangered | ||
| Philodromus buchari | Kubcová, 2004 | 06/02/2002, Valtice | 10 | Almost threatened | ||
| Philodromus buxi | Simon, 1884 | 05/06/2023, Mělník | 3 | |||
| Philodromus cespitum | (Walckenaer, 1802) | 11/23/1873, Františkovy Lázně | 131 | Not endangered | ||
| Philodromus collinus | C. L. Koch, 1835 | 1886, Strážný | 154 | Not endangered | ||
| Philodromus dispar | Walckenaer, 1826 | 1859, Praha, č. o. Praha 1 | 98 | Not endangered | ||
| Philodromus emarginatus | (Schrank, 1803) | 1859, Praha, č. o. Praha 1 | 31 | Almost threatened | ||
| Philodromus fuscomarginatus | (De Geer, 1778) | 11/23/1873, Františkovy Lázně | 35 | Endangered | ||
| Philodromus margaritatus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 41 | Endangered | ||
| Philodromus marmoratus | Kulczyński, 1891 | 06/25/1959, Lednice | 4 | Strongly endangered | ||
| Philodromus poecilus | (Thorell, 1872) | 05/30/1976, Brno, č. o. Brno II | 5 | Criticaly endangered | ||
| Philodromus praedatus | O. Pickard-Cambridge, 1871 | 05/24/1958, Třeboň, č. o. Branná | 25 | Almost threatened | ||
| Philodromus rufus | Walckenaer, 1826 | 1979, Dejvice | 13 | Strongly endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Phlegra (2x) | Phlegra cinereofasciata | (Simon, 1868) | 1940, Mohelno | 4 | Strongly endangered | |
| Phlegra fasciata | (Hahn, 1826) | 11/23/1873, Františkovy Lázně | 135 | Not endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pholcomma (1x) | Pholcomma gibbum | (Westring, 1851) | 1933, Lužná (okr. Rakovník) | 54 | Not endangered | |
Family Pholcidae (7x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pholcus (3x) | Pholcus alticeps | Spassky, 1932 | 08/28/2014, Chomutov | 6 | ||
| Pholcus opilionoides | (Schrank, 1781) | 1859, Praha, č. o. Praha 1 | 118 | Not endangered | ||
| Pholcus phalangioides | (Fuesslin, 1775) | 08/01/1959, Semily | 90 | Not endangered | ||
Family Phrurolithidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Phrurolithus (3x) | Phrurolithus festivus | (C. L. Koch, 1835) | 11/23/1873, Františkovy Lázně | 235 | Not endangered | |
| Phrurolithus minimus | C. L. Koch, 1839 | 1894, Karlovy Vary | 31 | Endangered | ||
| Phrurolithus pullatus | Kulczyński, 1897 | 05/20/1940, Mohelno | 24 | Endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Phycosoma (1x) | Phycosoma inornatum | (O. Pickard-Cambridge, 1861) | 05/29/1993, Doksy (okr. Č. Lípa), č. o. Břehyně | 6 | Criticaly endangered | |
| Phylloneta (2x) | Phylloneta impressa | (L. Koch, 1881) | 1886, Strážný | 203 | Not endangered | |
| Phylloneta sisyphia | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 139 | Not endangered | ||
Family Pholcidae (7x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Physocyclus (1x) | Physocyclus globosus | (Taczanowski, 1874) | 06/30/2017, České Budějovice, č. o. České Budějovice 1 | 1 | ||
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pirata (3x) | Pirata piraticus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 153 | Not endangered | |
| Pirata piscatorius | (Clerck, 1757) | 11/23/1873, Františkovy Lázně | 79 | Endangered | ||
| Pirata tenuitarsis | Simon, 1876 | 06/15/1929, Velké Meziříčí, č. o. Baliny | 44 | Almost threatened | ||
| Piratula (4x) | Piratula hygrophila | (Thorell, 1872) | 1941, Zbečno | 274 | Not endangered | |
| Piratula knorri | (Scopoli, 1763) | 1892, Harrachov, č. o. Nový Svět | 44 | Endangered | ||
| Piratula latitans | (Blackwall, 1841) | 1859, Praha, č. o. Praha 1 | 167 | Not endangered | ||
| Piratula uliginosa | (Thorell, 1856) | 07/31/1946, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 74 | Endangered | ||
Family Pisauridae (1x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pisaura (1x) | Pisaura mirabilis | (Clerck, 1757) | 1859, Praha, č. o. Praha 6 | 299 | Not endangered | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pistius (1x) | Pistius truncatus | (Pallas, 1772) | 1859, Praha, č. o. Praha 1 | 54 | Almost threatened | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pityohyphantes (1x) | Pityohyphantes phrygianus | (C. L. Koch, 1836) | 11/23/1873, Františkovy Lázně | 103 | Not endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Platnickina (1x) | Platnickina tincta | (Walckenaer, 1802) | 11/23/1873, Františkovy Lázně | 155 | Not endangered | |
Family Phalangiidae (12x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Platybunus (1x) | Platybunus bucephalus | (C. L. Koch, 1835) | 08/18/1981, Trusnov | 31 | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pocadicnemis (3x) | Pocadicnemis carpatica | (Chyzer, 1894) | 11/06/1981, Hluboká nad Vltavou, č. o. Purkarec | 6 | Endangered | |
| Pocadicnemis juncea | Locket & Millidge, 1953 | 08/15/1959, Železná Ruda, č. o. Hojsova Stráž | 59 | Not endangered | ||
| Pocadicnemis pumila | (Blackwall, 1841) | 08/15/1934, Hatín, č. o. Roseč | 156 | Not endangered | ||
| Poeciloneta (1x) | Poeciloneta variegata | (Blackwall, 1841) | 1889, Křivoklát | 27 | Almost threatened | |
Family Clubionidae (24x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Porrhoclubiona (2x) | Porrhoclubiona genevensis | (L. Koch, 1866) | 07/10/1955, Pavlov (okr. Břeclav) | 10 | Criticaly endangered | |
| Porrhoclubiona leucaspis | (Simon, 1932) | 06/04/1996, Bzenec | 9 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Porrhomma (15x) | Porrhomma cambridgei | Merrett, 1994 | 05/02/1999, Srbsko | 10 | Endangered | |
| Porrhomma campbelli | F. O. Pickard-Cambridge, 1894 | 06/13/1960, Třeboň, č. o. Stará Hlína | 11 | Endangered | ||
| Porrhomma convexum | (Westring, 1851) | 07/17/1899, Sloup | 26 | Almost threatened | ||
| Porrhomma egeria | Simon, 1884 | 1899, Blansko, č. o. Těchov | 46 | Not endangered | ||
| Porrhomma microcavense | Wunderlich, 1990 | 06/01/2000, Střemy, č. o. Lhotka | 6 | Strongly endangered | ||
| Porrhomma microphthalmum | (O. Pickard-Cambridge, 1871) | 1940, Adamov | 113 | Not endangered | ||
| Porrhomma microps | (Roewer, 1931) | 05/23/1964, Dolní Věstonice | 32 | Not endangered | ||
| Porrhomma montanum | Jackson, 1913 | 03/15/1959, Lednice | 11 | Endangered | ||
| Porrhomma myops | Simon, 1884 | 10/04/1986, Stachy, č. o. Popelná | 18 | Not endangered | ||
| Porrhomma oblitum | (O. Pickard-Cambridge, 1871) | 06/23/1972, Prasek, č. o. Kobylice | 17 | Not endangered | ||
| Porrhomma omissum | Miller, 1971 | 1975, Dolní Morava | 1 | Missing | ||
| Porrhomma pallidum | Jackson, 1913 | 1949, Borkovice, č. o. Mažice | 46 | Not endangered | ||
| Porrhomma profundum | M. Dahl, 1939 | 06/17/2006, Štramberk | 3 | Strongly endangered | ||
| Porrhomma pygmaeum | (Blackwall, 1834) | 1894, Praha, č. o. Praha 5 | 76 | Not endangered | ||
| Porrhomma rosenhaueri | (L. Koch, 1872) | 05/29/1994, Branov | 8 | Criticaly endangered | ||
| Prinerigone (1x) | Prinerigone vagans | (Audouin, 1826) | 10/17/1952, Lednice | 9 | Criticaly endangered | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Psammitis (2x) | Psammitis ninnii | (Thorell, 1872) | 1937, Mohelno | 20 | Strongly endangered | |
| Psammitis sabulosus | (Hahn, 1832) | 1859, Praha, č. o. Praha 1 | 14 | Endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pseudeuophrys (3x) | Pseudeuophrys erratica | (Walckenaer, 1826) | 11/23/1873, Františkovy Lázně | 50 | Not endangered | |
| Pseudeuophrys lanigera | (Simon, 1871) | 1976, Pardubice, č. o. Pardubice-Staré Město | 12 | Not endangered | ||
| Pseudeuophrys obsoleta | (Simon, 1868) | 06/15/1929, Pavlov (okr. Břeclav) | 14 | Endangered | ||
| Pseudicius (1x) | Pseudicius encarpatus | (Walckenaer, 1802) | 08/23/1936, Lednice | 33 | Almost threatened | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Pseudomaro (1x) | Pseudomaro aenigmaticus | Denis, 1966 | 03/30/2002, Bubovice | 2 | Almost threatened | |
Family Pholcidae (7x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Psilochorus (1x) | Psilochorus simoni | (Berland, 1911) | 04/11/2022, Praha | 2 | Not endangered | |
Family Philodromidae (23x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Rhysodromus (1x) | Rhysodromus histrio | (Latreille, 1819) | 08/15/2014, Božice | 6 | Strongly endangered | |
Family Phalangiidae (12x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Rilaena (1x) | Rilaena triangularis | (Herbst, 1799) | 06/06/2004, Horka nad Moravou | 74 | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Robertus (5x) | Robertus arundineti | (O. Pickard-Cambridge, 1871) | 11/23/1873, Františkovy Lázně | 151 | Not endangered | |
| Robertus lividus | (Blackwall, 1836) | 11/23/1873, Františkovy Lázně | 252 | Not endangered | ||
| Robertus neglectus | (O. Pickard-Cambridge, 1871) | 08/15/1934, Hatín, č. o. Roseč | 38 | Not endangered | ||
| Robertus scoticus | Jackson, 1914 | 07/15/1949, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 36 | Almost threatened | ||
| Robertus truncorum | (L. Koch, 1872) | 1875, Pec pod Sněžkou | 19 | Almost threatened | ||
| Rugathodes (2x) | Rugathodes bellicosus | (Simon, 1873) | 1929, Pec pod Sněžkou | 49 | Not endangered | |
| Rugathodes instabilis | (O. Pickard-Cambridge, 1871) | 06/27/1972, Lednice | 31 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Saaristoa (2x) | Saaristoa abnormis | (Blackwall, 1841) | 1949, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 12 | Strongly endangered | |
| Saaristoa firma | (O. Pickard-Cambridge, 1906) | 11/01/1968, Bystrá nad Jizerou | 25 | Not endangered | ||
| Saloca (2x) | Saloca diceros | (O. Pickard-Cambridge, 1871) | 09/09/1959, Lipová-lázně, č. o. Horní Lipová | 57 | Not endangered | |
| Saloca kulczynskii | Miller & Kratochvíl, 1939 | 1952, Jablunkov, č. o. Horní Lomná | 6 | Almost threatened | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Salticus (3x) | Salticus cingulatus | (Panzer, 1797) | 11/23/1873, Františkovy Lázně | 33 | Almost threatened | |
| Salticus scenicus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 130 | Not endangered | ||
| Salticus zebraneus | (C. L. Koch, 1837) | 1894, Peruc | 106 | Not endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Sardinidion (1x) | Sardinidion blackwalli | (O. Pickard-Cambridge, 1871) | 08/20/1959, Třeboň, č. o. Třeboň I | 16 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Scotargus (1x) | Scotargus pilosus | Simon, 1913 | 05/12/1974, Kuničky | 12 | Not endangered | |
Family Liocranidae (10x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Scotina (2x) | Scotina celans | (Blackwall, 1841) | 11/15/1968, Pouzdřany | 19 | Endangered | |
| Scotina palliardii | (L. Koch, 1881) | 08/15/1941, Mohelno | 15 | Endangered | ||
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Scotophaeus (2x) | Scotophaeus quadripunctatus | (Linnaeus, 1758) | 11/23/1873, Františkovy Lázně | 38 | Not endangered | |
| Scotophaeus scutulatus | (L. Koch, 1866) | 11/23/1873, Františkovy Lázně | 49 | Not endangered | ||
Family Scytodidae (1x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Scytodes (1x) | Scytodes thoracica | (Latreille, 1802) | 05/20/1969, Břeclav | 19 | Not endangered | |
Family Segestriidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Segestria (2x) | Segestria bavarica | C. L. Koch, 1843 | 1894, Roztoky | 10 | Endangered | |
| Segestria senoculata | (Linnaeus, 1758) | 1859, Praha, č. o. Praha 1 | 176 | Not endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Sibianor (1x) | Sibianor aurocinctus | (Ohlert, 1865) | 11/23/1873, Františkovy Lázně | 80 | Almost threatened | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Silometopus (2x) | Silometopus elegans | (O. Pickard-Cambridge, 1873) | 1958, Železná Ruda, č. o. Hojsova Stráž | 26 | Endangered | |
| Silometopus reussi | (Thorell, 1871) | 11/23/1873, Františkovy Lázně | 18 | Not endangered | ||
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Simitidion (1x) | Simitidion simile | (C. L. Koch, 1836) | 11/23/1873, Františkovy Lázně | 21 | Endangered | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Singa (2x) | Singa hamata | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 81 | Not endangered | |
| Singa nitidula | C. L. Koch, 1844 | 1894, Čelákovice | 54 | Almost threatened | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Sintula (1x) | Sintula corniger | (Blackwall, 1856) | 1949, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 37 | Almost threatened | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Sittisax (1x) | Sittisax saxicola | (C. L. Koch, 1846) | 1892, Harrachov, č. o. Nový Svět | 20 | Endangered | |
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Sosticus (1x) | Sosticus loricatus | (L. Koch, 1866) | 1936, Trutnov, č. o. Trutnov-Vnitřní Město | 13 | Not endangered | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Spiracme (1x) | Spiracme striatipes | (L. Koch, 1870) | 1894, Střelice (okr. Brno-venkov) | 39 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Staveleya (1x) | Staveleya pusilla | (Menge, 1869) | 04/10/1963, Pouzdřany | 7 | Strongly endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Steatoda (5x) | Steatoda albomaculata | (De Geer, 1778) | 1859, Praha, č. o. Praha 1 | 46 | Almost threatened | |
| Steatoda bipunctata | (Linnaeus, 1758) | 1859, Praha, č. o. Praha 1 | 129 | Not endangered | ||
| Steatoda castanea | (Clerck, 1757) | 1933, Luže, č. o. Bělá | 31 | Not endangered | ||
| Steatoda grossa | (C. L. Koch, 1838) | 1930, Praha, č. o. Praha 2 | 30 | Not endangered | ||
| Steatoda triangulosa | (Walckenaer, 1802) | 04/15/1973, Praha, č. o. Praha 2 | 39 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Stemonyphantes (2x) | Stemonyphantes conspersus | (L. Koch, 1879) | 1930, Pec pod Sněžkou | 2 | Missing | |
| Stemonyphantes lineatus | (Linnaeus, 1758) | 1859, Praha, č. o. Praha 1 | 80 | Not endangered | ||
| Styloctetor (2x) | Styloctetor compar | (Westring, 1861) | 1940, Senorady | 17 | Endangered | |
| Styloctetor romanus | (O. Pickard-Cambridge, 1873) | 1940, Třebíč, č. o. Vnitřní Město | 7 | Strongly endangered | ||
| Syedra (2x) | Syedra gracilis | (Menge, 1869) | 08/01/1961, Tetín, č. o. Koda | 7 | Endangered | |
| Syedra myrmicarum | (Kulczyński, 1882) | 07/11/1995, Brtnice, č. o. Přímělkov | 6 | Strongly endangered | ||
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Synageles (2x) | Synageles hilarulus | (C. L. Koch, 1846) | 05/06/1958, Pouzdřany | 7 | Strongly endangered | |
| Synageles venator | (Lucas, 1836) | 1940, Mohelno | 89 | Not endangered | ||
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Synema (1x) | Synema globosum | (Fabricius, 1775) | 1894, Brno, č. o. Brno I | 77 | Almost threatened | |
Family Salticidae (65x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Talavera (5x) | Talavera aequipes | (O. Pickard-Cambridge, 1871) | 1894, Praha, č. o. Praha 5 | 65 | Not endangered | |
| Talavera aperta | (Miller, 1971) | 05/26/1975, Ostrava, č. o. Ostrava 1 | 15 | Almost threatened | ||
| Talavera milleri | (Brignoli, 1983) | 05/29/1962, Louny, č. o. Raná | 6 | Strongly endangered | ||
| Talavera parvistyla | Logunov & Kronestedt, 2003 | 09/15/1983, Borová Lada | 7 | Strongly endangered | ||
| Talavera petrensis | (C. L. Koch, 1837) | 1930, Pec pod Sněžkou | 44 | Endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tallusia (1x) | Tallusia experta | (O. Pickard-Cambridge, 1871) | 1933, Lužná (okr. Rakovník) | 98 | Not endangered | |
Family Oonopidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tapinesthis (1x) | Tapinesthis inermis | (Simon, 1882) | 10/29/1973, Mladá Boleslav, č. o. Čejetice | 4 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tapinocyba (2x) | Tapinocyba affinis | Lessert, 1907 | 08/15/1934, Hatín, č. o. Roseč | 63 | Not endangered | |
| Tapinocyba insecta | (L. Koch, 1869) | 1933, Lužná (okr. Rakovník) | 94 | Not endangered | ||
| Tapinocyboides (1x) | Tapinocyboides pygmaeus | (Menge, 1869) | 1949, Mohelno | 19 | Endangered | |
| Tapinopa (1x) | Tapinopa longidens | (Wider, 1834) | 1886, Nýrsko | 58 | Not endangered | |
| Taranucnus (1x) | Taranucnus setosus | (O. Pickard-Cambridge, 1863) | 1949, Borkovice, č. o. Mažice | 14 | Strongly endangered | |
Family Agelenidae (13x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tegenaria (4x) | Tegenaria campestris | (C. L. Koch, 1834) | 1859, Praha, č. o. Praha 1 | 67 | Not endangered | |
| Tegenaria domestica | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 63 | Not endangered | ||
| Tegenaria ferruginea | (Panzer, 1804) | 1934, Sloupnice, č. o. Dolní Sloupnice | 145 | Not endangered | ||
| Tegenaria silvestris | L. Koch, 1872 | 1886, Železná Ruda | 145 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tenuiphantes (7x) | Tenuiphantes alacris | (Blackwall, 1853) | 11/23/1873, Františkovy Lázně | 143 | Not endangered | |
| Tenuiphantes cristatus | (Menge, 1866) | 08/15/1934, Hatín, č. o. Roseč | 162 | Not endangered | ||
| Tenuiphantes flavipes | (Blackwall, 1854) | 07/08/1900, Sloup | 199 | Not endangered | ||
| Tenuiphantes mengei | (Kulczyński, 1887) | 1889, Nový Jáchymov | 179 | Not endangered | ||
| Tenuiphantes tenebricola | (Wider, 1834) | 1929, Pec pod Sněžkou | 198 | Not endangered | ||
| Tenuiphantes tenuis | (Blackwall, 1852) | 1930, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 86 | Not endangered | ||
| Tenuiphantes zimmermanni | (Bertkau, 1890) | 09/25/1968, Bystrá nad Jizerou | 5 | Endangered | ||
Family Tetragnathidae (15x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tetragnatha (8x) | Tetragnatha dearmata | Thorell, 1873 | 1898, Praha, č. o. Praha 4 | 42 | Almost threatened | |
| Tetragnatha extensa | (Linnaeus, 1758) | 1859, Praha, č. o. Praha 1 | 159 | Not endangered | ||
| Tetragnatha montana | Simon, 1874 | 1894, Brno, č. o. Brno I | 137 | Not endangered | ||
| Tetragnatha nigrita | Lendl, 1886 | 1889, Křivoklát | 58 | Almost threatened | ||
| Tetragnatha obtusa | C. L. Koch, 1837 | 11/23/1873, Františkovy Lázně | 78 | Not endangered | ||
| Tetragnatha pinicola | L. Koch, 1870 | 1875, Pec pod Sněžkou | 218 | Not endangered | ||
| Tetragnatha shoshone | Levi, 1981 | 07/16/1996, Sedlec (okr. Břeclav) | 5 | Not endangered | ||
| Tetragnatha striata | L. Koch, 1862 | 11/23/1873, Františkovy Lázně | 14 | Strongly endangered | ||
Family Agelenidae (13x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Textrix (1x) | Textrix denticulata | (Olivier, 1789) | 1894, Písek (okr. Písek), č. o. Budějovické Předměstí | 29 | Almost threatened | |
Family Philodromidae (23x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Thanatus (5x) | Thanatus arenarius | L. Koch, 1872 | 1937, Mohelno | 26 | Endangered | |
| Thanatus atratus | Simon, 1875 | 1898, Praha, č. o. Praha 4 | 16 | Endangered | ||
| Thanatus formicinus | (Clerck, 1757) | 11/23/1873, Františkovy Lázně | 75 | Almost threatened | ||
| Thanatus sabulosus | (Menge, 1875) | 1970, Sýkořice | 5 | Criticaly endangered | ||
| Thanatus striatus | C. L. Koch, 1845 | 1936, Brno, č. o. Brno II | 51 | Almost threatened | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Theonina (1x) | Theonina cornix | (Simon, 1881) | 1940, Mohelno | 16 | Endangered | |
Family Theridiidae (61x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Theonoe (1x) | Theonoe minutissima | (O. Pickard-Cambridge, 1879) | 1949, Zlaté Hory (okr. Bruntál), č. o. Rejvíz | 20 | Almost threatened | |
| Theridion (9x) | Theridion betteni | Wiehle, 1960 | 05/29/1962, Louny, č. o. Raná | 46 | Almost threatened | |
| Theridion familiare | O. Pickard-Cambridge, 1871 | 06/17/2022, Pasohlávky | 1 | |||
| Theridion hannoniae | Denis, 1945 | 05/29/2021, Vrskmaň | 3 | |||
| Theridion hemerobium | Simon, 1914 | 06/25/1991, Krňany, č. o. Teletín | 28 | Not endangered | ||
| Theridion melanurum | Hahn, 1831 | 11/23/1873, Františkovy Lázně | 31 | Not endangered | ||
| Theridion mystaceum | L. Koch, 1870 | 08/12/1959, Třeboň, č. o. Třeboň II | 63 | Not endangered | ||
| Theridion pictum | (Walckenaer, 1802) | 11/23/1873, Františkovy Lázně | 35 | Almost threatened | ||
| Theridion pinastri | L. Koch, 1872 | 1894, Opolany, č. o. Oškobrh | 76 | Not endangered | ||
| Theridion varians | Hahn, 1833 | 1929, Říčany (okr. Praha-vých.), č. o. Říčany | 171 | Not endangered | ||
Family Theridiosomatidae (1x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Theridiosoma (1x) | Theridiosoma gemmosum | (L. Koch, 1877) | 06/01/1996, Třeboň, č. o. Stará Hlína | 27 | Almost threatened | |
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Thomisus (1x) | Thomisus onustus | Walckenaer, 1805 | 1859, Praha, č. o. Praha 4 | 28 | Endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Thyreosthenius (2x) | Thyreosthenius biovatus | (O. Pickard-Cambridge, 1875) | 03/17/1974, Lány (okr. Rakovník), č. o. Lány | 12 | Endangered | |
| Thyreosthenius parasiticus | (Westring, 1851) | 04/16/1967, Ševětín, č. o. Chotýčany | 80 | Not endangered | ||
Family Philodromidae (23x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tibellus (3x) | Tibellus macellus | Simon, 1875 | 04/15/1961, Pouzdřany | 1 | Criticaly endangered | |
| Tibellus maritimus | (Menge, 1875) | 1941, Lišany | 20 | Endangered | ||
| Tibellus oblongus | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 1 | 166 | Not endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tiso (1x) | Tiso vagans | (Blackwall, 1834) | 11/23/1873, Františkovy Lázně | 63 | Not endangered | |
Family Titanoecidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Titanoeca (3x) | Titanoeca quadriguttata | (Hahn, 1833) | 1866, Teplice | 110 | Not endangered | |
| Titanoeca schineri | L. Koch, 1872 | 1894, Střelice (okr. Brno-venkov) | 23 | Almost threatened | ||
| Titanoeca spominima | (Taczanowski, 1866) | 06/04/1996, Bzenec | 2 | |||
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Tmarus (2x) | Tmarus piger | (Walckenaer, 1802) | 1859, Praha, č. o. Praha 4 | 48 | Endangered | |
| Tmarus stellio | Simon, 1875 | 06/30/1997, Lanžhot | 9 | Strongly endangered | ||
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Trachyzelotes (1x) | Trachyzelotes pedestris | (C. L. Koch, 1837) | 1889, Křivoklát | 91 | Not endangered | |
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Trematocephalus (1x) | Trematocephalus cristatus | (Wider, 1834) | 1933, Zbečno | 153 | Not endangered | |
Family Oonopidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Triaeris (1x) | Triaeris stenaspis | Simon, 1892 | 08/13/2017, Praha | 2 | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Trichoncus (2x) | Trichoncus affinis | Kulczyński, 1894 | 05/04/1971, Prasek | 11 | Endangered | |
| Trichoncus auritus | (L. Koch, 1869) | 07/21/1938, Pouzdřany | 18 | Endangered | ||
| Trichopterna (1x) | Trichopterna cito | (O. Pickard-Cambridge, 1873) | 1940, Mohelno | 49 | Endangered | |
| Trichopternoides (1x) | Trichopternoides thorelli | (Westring, 1861) | 05/08/1960, Kamenice (okr. Praha-vých.), č. o. Kamenice | 12 | Almost threatened | |
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Trochosa (4x) | Trochosa robusta | (Simon, 1876) | 1889, Křivoklát | 63 | Almost threatened | |
| Trochosa ruricola | (De Geer, 1778) | 1859, Praha, č. o. Praha 5 | 200 | Not endangered | ||
| Trochosa spinipalpis | (F. O. Pickard-Cambridge, 1895) | 1929, Písek (okr. Písek), č. o. Nový Dvůr | 122 | Almost threatened | ||
| Trochosa terricola | Thorell, 1856 | 11/23/1873, Františkovy Lázně | 341 | Not endangered | ||
Family Mysmenidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Trogloneta (1x) | Trogloneta granulum | Simon, 1922 | 10/04/1986, Stachy, č. o. Popelná | 10 | Endangered | |
Family Trogulidae (2x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Trogulus (2x) | Trogulus nepaeformis | (Scopoli, 1763) | 09/23/2002, Stráž nad Ohří, č. o. Boč | 22 | ||
| Trogulus tricarinatus | (Linnaeus, 1767) | 11/30/2005, Březno u Chomutova | 66 | |||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Troxochrus (1x) | Troxochrus scabriculus | (Westring, 1851) | 11/23/1873, Františkovy Lázně | 27 | Not endangered | |
| Typhochrestus (1x) | Typhochrestus digitatus | (O. Pickard-Cambridge, 1873) | 1940, Jindřichův Hradec, č. o. Jindřichův Hradec I | 36 | Almost threatened | |
Family Uloboridae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Uloborus (2x) | Uloborus plumipes | Lucas, 1846 | 12/09/2000, Praha, č. o. Praha 3 | 11 | Not endangered | |
| Uloborus walckenaerius | Latreille, 1806 | 05/25/1983, Lednice | 4 | Strongly endangered | ||
Family Linyphiidae (268x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Walckenaeria (19x) | Walckenaeria acuminata | Blackwall, 1833 | 11/23/1873, Františkovy Lázně | 53 | Not endangered | |
| Walckenaeria alticeps | (Denis, 1952) | 06/16/1964, Františkovy Lázně, č. o. Nový Drahov | 46 | Not endangered | ||
| Walckenaeria antica | (Wider, 1834) | 08/15/1934, Hatín, č. o. Roseč | 109 | Not endangered | ||
| Walckenaeria atrotibialis | (O. Pickard-Cambridge, 1878) | 1933, Lužná (okr. Rakovník) | 151 | Not endangered | ||
| Walckenaeria capito | (Westring, 1861) | 11/23/1873, Františkovy Lázně | 41 | Almost threatened | ||
| Walckenaeria corniculans | (O. Pickard-Cambridge, 1875) | 1940, Mohelno | 50 | Not endangered | ||
| Walckenaeria cucullata | (C. L. Koch, 1836) | 08/15/1934, Hatín, č. o. Roseč | 114 | Not endangered | ||
| Walckenaeria cuspidata | Blackwall, 1833 | 11/23/1873, Františkovy Lázně | 63 | Not endangered | ||
| Walckenaeria dysderoides | (Wider, 1834) | 1940, Senorady | 102 | Not endangered | ||
| Walckenaeria furcillata | (Menge, 1869) | 1940, Mohelno | 92 | Not endangered | ||
| Walckenaeria kochi | (O. Pickard-Cambridge, 1873) | 07/28/200, Horní Město, č. o. Skály | 54 | Almost threatened | ||
| Walckenaeria mitrata | (Menge, 1868) | 1889, Hořovice | 46 | Not endangered | ||
| Walckenaeria monoceros | (Wider, 1834) | 03/01/1961, Praha, č. o. Praha 5 | 6 | Strongly endangered | ||
| Walckenaeria nodosa | O. Pickard-Cambridge, 1873 | 1949, Borkovice, č. o. Mažice | 18 | Endangered | ||
| Walckenaeria nudipalpis | (Westring, 1851) | 1940, Kladeruby nad Oslavou | 81 | Not endangered | ||
| Walckenaeria obtusa | Blackwall, 1836 | 08/15/1934, Hatín, č. o. Roseč | 91 | Not endangered | ||
| Walckenaeria simplex | Chyzer, 1894 | 09/12/1956, Doubravník | 18 | Endangered | ||
| Walckenaeria unicornis | O. Pickard-Cambridge, 1861 | 1933, Lužná (okr. Rakovník) | 33 | Almost threatened | ||
| Walckenaeria vigilax | (Blackwall, 1853) | 1949, Borkovice, č. o. Mažice | 42 | Not endangered | ||
| Wubanoides (1x) | Wubanoides uralensis lithodytes | Schikora, 2004 | 08/21/1987, Česká Kamenice, č. o. Líska | 9 | Not endangered | |
Family Lycosidae (63x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Xerolycosa (2x) | Xerolycosa miniata | (C. L. Koch, 1834) | 1894, Brno, č. o. Brno I | 92 | Not endangered | |
| Xerolycosa nemoralis | (Westring, 1861) | 11/23/1873, Františkovy Lázně | 260 | Not endangered | ||
Family Thomisidae (35x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Xysticus (10x) | Xysticus acerbus | Thorell, 1872 | 11/23/1873, Františkovy Lázně | 30 | Not endangered | |
| Xysticus audax | (Schrank, 1803) | 1859, Praha, č. o. Praha 1 | 173 | Not endangered | ||
| Xysticus bifasciatus | C. L. Koch, 1837 | 11/23/1873, Františkovy Lázně | 187 | Not endangered | ||
| Xysticus cristatus | (Clerck, 1757) | 1859, Praha, č. o. Praha 1 | 275 | Not endangered | ||
| Xysticus erraticus | (Blackwall, 1834) | 1894, Brno, č. o. Brno I | 91 | Not endangered | ||
| Xysticus kochi | Thorell, 1872 | 1894, Brno, č. o. Brno I | 172 | Not endangered | ||
| Xysticus lanio | C. L. Koch, 1835 | 1859, Praha, č. o. Praha 1 | 92 | Almost threatened | ||
| Xysticus luctator | L. Koch, 1870 | 11/23/1873, Františkovy Lázně | 50 | Endangered | ||
| Xysticus luctuosus | (Blackwall, 1836) | 11/23/1873, Františkovy Lázně | 54 | Not endangered | ||
| Xysticus ulmi | (Hahn, 1831) | 06/14/1938, Pouzdřany | 160 | Not endangered | ||
Family Gnaphosidae (58x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Zelotes (10x) | Zelotes apricorum | (L. Koch, 1876) | 07/10/1957, Brno, č. o. Brno III | 43 | Almost threatened | |
| Zelotes aurantiacus | Miller, 1967 | 09/18/1961, Olší | 38 | Almost threatened | ||
| Zelotes clivicola | (L. Koch, 1870) | 1929, Pec pod Sněžkou | 81 | Not endangered | ||
| Zelotes electus | (C. L. Koch, 1839) | 07/16/1940, Mohelno | 69 | Almost threatened | ||
| Zelotes erebeus | (Thorell, 1871) | 1940, Mohelno | 39 | Endangered | ||
| Zelotes exiguus | (Müller & Schenkel, 1895) | 05/19/1962, Libčice nad Vltavou | 12 | Endangered | ||
| Zelotes latreillei | (Simon, 1878) | 1889, Nový Jáchymov | 144 | Not endangered | ||
| Zelotes longipes | (L. Koch, 1866) | 1894, Praha, č. o. Praha 5 | 41 | Almost threatened | ||
| Zelotes petrensis | (C. L. Koch, 1839) | 1886, Železná Ruda | 143 | Not endangered | ||
| Zelotes subterraneus | (C. L. Koch, 1833) | 1859, Praha, č. o. Praha 4 | 196 | Not endangered | ||
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Zilla (1x) | Zilla diodia | (Walckenaer, 1802) | 1894, Písek (okr. Písek), č. o. Budějovické Předměstí | 71 | Almost threatened | |
Family Zodariidae (3x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Zodarion (3x) | Zodarion germanicum | (C. L. Koch, 1837) | 1866, Rovensko pod Troskami | 77 | Not endangered | |
| Zodarion italicum | (Canestrini, 1868) | 05/29/2000, Praha, č. o. Praha 5 | 8 | Not endangered | ||
| Zodarion rubidum | Simon, 1914 | 05/15/1972, Nový Vestec, č. o. Káraný | 50 | Not endangered | ||
Family Miturgidae (5x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Zora (5x) | Zora manicata | Simon, 1878 | 07/03/1940, Mohelno | 23 | Endangered | |
| Zora nemoralis | (Blackwall, 1861) | 1929, Křivoklát | 91 | Not endangered | ||
| Zora parallela | Simon, 1878 | 05/13/2010, Hodonín | 3 | Strongly endangered | ||
| Zora silvestris | Kulczyński, 1897 | 1931, Rakovník, č. o. Rakovník I | 88 | Not endangered | ||
| Zora spinimana | (Sundevall, 1833) | 1859, Praha, č. o. Praha 1 | 314 | Not endangered | ||
Family Zoropsidae (1x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Zoropsis (1x) | Zoropsis spinimana | (Dufour, 1820) | 05/29/2019, Brno | 10 | Not endangered | |
Family Araneidae (45x) | ||||||
| Genus | Species | Description | First record | Squares | Threat level | |
| Zygiella (3x) | Zygiella atrica | (C. L. Koch, 1845) | 1859, Praha, č. o. Praha 1 | 43 | Not endangered | |
| Zygiella montana | (C. L. Koch, 1834) | 11/23/1873, Františkovy Lázně | 19 | Not endangered | ||
| Zygiella x-notata | (Clerck, 1757) | 11/23/1873, Františkovy Lázně | 12 | Not endangered | ||
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