| Genus | Species | Description | First record | Squares | Threat level | |
|---|---|---|---|---|---|---|
| Family Mimetidae (4x) | ||||||
| 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 | ||