Records by time
Theridiidae 0-19001901-19501951-20002001-2018
Episinus truncatus Latreille, 1809 Almost threatened 3x 5x 83x 21x 112x

Episinus truncatus Latreille, 1809

Czech namesnovačka uťatá
Threat levelAlmost threatened
Records112 nálezů, 35 kvadrátů
First record 1859, F. Prach, Prach 1866
Last record 2019 , Vlastimil Růžička, Jan Dolanský
Distribution areaEuropean (U) (Af.
Phytogeographic areaThermo
Původnost stanovišťclimax, semi-natural
Humidityvery dry, dry
Stratum(Ground layer), Herb layer, Shrub layer
Osvětlení stanovišťopen
Hojnost výskytuscarce


© Oto Zimmermann

While the majority of the Central European landscape would be covered by forests without human influence, rocky areas form isolated, islet-like, natural, non-forest habitats. The surface of some of these non-forested areas is composed of bare bedrock or products of its erosional breakdown (without a soil layer) such as gravel, sand banks, sand dunes, scree slopes and rock outcrop habitats. These habitats harbour specialized  spider species that depend on their specific substratum and microclimate (Růžička 2000). Out of these habitats, rock walls (and scree slopes) form one of the most distinct ecological gradients of any terrestrial ecosystem (Larson et al. 1989, Růžička et al. 1995). They provide habitats with extremely warm and cold microclimatic conditions in close proximity. They also belong to habitats almost unknown until now due to the technical and practical problems of sampling.

Sandstones can form extensive systems of rocks, sometimes with a broad spectrum of meso- and microhabitats due to their very dynamic relief. Sandstone rocks are characterised by a marked contrast between forested plateau and bare vertical rock walls (Balatka and Sládek 1984). Upper margins of rocks are dry, vertical rock walls can be sun-exposed, dry and bare, or shady and humid and hence covered by mosses. Spaces with an extremely cold climate can occur in deep gorges. The aim of this study is to evaluate available data on the species composition of spider assemblages in sandstone rocks, including new data about spiders on rock walls in the Bohemian Switzerland (České Švýcarsko) National Park.


By month

By altitude

By collecting method (57 used records)
Episinus truncatus Latreille, 1809 LCMalesFemalesJuvenilesRecords
Zemní past4144134
Individuální sběr1113221

By biotope (52 used records)
Episinus truncatus Latreille, 1809 LCMalesFemalesJuvenilesRecords
lesostepní doubravy1001
Pískovcová skalní města0201
Skály nižších a středních výšek2103
Ovocné sady a vinohrady4201
Xerotermní travinobylinná společenstva2204
Skalní lesostepi, šípákové a teplomilné doubravy2304
Xerotermy na jiných podkladech3758217
Reliktní bory na skalních podkladech1101
Vřesoviště se smilkou, vřesem, borůvkou2103
Kamenité sutě1213
Lesní okraje1001
Trnkové křoviny1001
Skalní stepi na vápencových podkladech0303
Louky a pastviny0101

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