- family: Amaurobiidae
- genus: Amaurobius
- species: Amaurobius agastus (Chamberlin, 1947)
- species: Amaurobius barbaricus Leech, 1972
- species: Amaurobius borealis Emerton, 1909
- species: Amaurobius corruptus Leech, 1972
- species: Amaurobius diablo Leech, 1972
- species: Amaurobius distortus Leech, 1972
- species: Amaurobius dorotheae (Chamberlin, 1947)
- species: Amaurobius ferox (Walckenaer, 1830)
- species: Amaurobius galeritus Leech, 1972
- species: Amaurobius hagiellus (Chamberlin, 1947)
- species: Amaurobius heathi (Chamberlin, 1947)
- species: Amaurobius intermedius Leech, 1972
- species: Amaurobius latescens (Chamberlin, 1919)
- species: Amaurobius leechi Brignoli, 1983
- species: Amaurobius mathetes (Chamberlin, 1947)
- species: Amaurobius mephisto (Chamberlin, 1947)
- species: Amaurobius minutus Leech, 1972
- species: Amaurobius palomar Leech, 1972
- species: Amaurobius prosopidus Leech, 1972
- species: Amaurobius similis (Blackwall, 1861)
- species: Amaurobius tamalpais Leech, 1972
- species: Amaurobius transversus Leech, 1972
- species: Amaurobius triangularis Leech, 1972
- species: Amaurobius tulare Leech, 1972
- species: Amaurobius vexans Leech, 1972
- genus: Arctobius
- genus: Callobius
- species: Callobius angelus (Chamberlin & Ivie, 1947)
- species: Callobius arizonicus (Chamberlin & Ivie, 1947)
- species: Callobius bennetti (Blackwall, 1846)
- species: Callobius canada (Chamberlin & Ivie, 1947)
- species: Callobius deces (Chamberlin & Ivie, 1947)
- species: Callobius enus (Chamberlin & Ivie, 1947)
- species: Callobius gertschi Leech, 1972
- species: Callobius guachama Leech, 1972
- species: Callobius hyonasus Leech, 1972
- species: Callobius kamelus (Chamberlin & Ivie, 1947)
- species: Callobius klamath Leech, 1972
- species: Callobius manzanita Leech, 1972
- species: Callobius nevadensis (Simon, 1884)
- species: Callobius nomeus (Chamberlin, 1919)
- species: Callobius olympus (Chamberlin & Ivie, 1947)
- species: Callobius panther Leech, 1972
- species: Callobius paskenta Leech, 1972
- species: Callobius pauculus Leech, 1972
- species: Callobius paynei Leech, 1972
- species: Callobius pictus (Simon, 1884)
- species: Callobius rothi Leech, 1972
- species: Callobius severus (Simon, 1884)
- species: Callobius sierra Leech, 1972
- species: Callobius tamarus (Chamberlin & Ivie, 1947)
- species: Callobius tehama Leech, 1972
- genus: Cybaeopsis
- genus: Pimus
- species: Pimus desiccatus Leech, 1972
- species: Pimus eldorado Leech, 1972
- species: Pimus fractus (Chamberlin, 1920)
- species: Pimus hesperellus Chamberlin, 1947
- species: Pimus iviei Leech, 1972
- species: Pimus leucus Chamberlin, 1947
- species: Pimus napa Leech, 1972
- species: Pimus nawtawaketus Leech, 1972
- species: Pimus pitus Chamberlin, 1947
- species: Pimus salemensis Leech, 1972
- genus: Tugana
- genus: Zanomys
- family: Amphinectidae
- family: Desidae
- family: Titanoecidae