Medium-sized cave spiders, resembling some Theridiidae and Linyphiidae. They build irregular space webs in cracks, caves, cellars, and similar places. Opisthosoma dorsally with dark pattern. Body length > 3 mm. Only one genus in Central Europe: Nesticus

Nesticus cellulanus - male (c) TheineNesticus cellulanus - female (c) TheineNesticus cellulanus - labium (c) Hauslage
Nesticus cellulanus - male palp (c) HauslageNesticus cellulanus - epigynum (c) Theine
Photos: Nesticus cellulanus