| Genus | Species | Description | First record | Squares | Threat level | |
|---|---|---|---|---|---|---|
| Family Eresidae (4x) | ||||||
| Eresus (4x) | Eresus hermani | Kovács, Prazsák, Eichardt, Vári & Gyurkovics, 2015 | 10/17/2015, Mikulov | 1 | Criticaly endangered | |
| 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 | ||
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