- family: Linyphiidae
- genus: Collinsia
- genus: Erigone
- species: Erigone aletris Crosby & Bishop, 1928
- species: Erigone alsaida Crosby & Bishop, 1928
- species: Erigone arctica (White, 1852)
- species: Erigone arctica sibirica Kulczynski, 1908
- species: Erigone arctophylacis Crosby & Bishop, 1928
- species: Erigone atra Blackwall, 1833
- species: Erigone autumnalis Emerton, 1882
- species: Erigone barrowsi Crosby & Bishop, 1928
- species: Erigone blaesa Crosby & Bishop, 1928
- species: Erigone dentigera O. P.-Cambridge, 1874
- species: Erigone dentosa O. P.-Cambridge, 1894
- species: Erigone ephala Crosby & Bishop, 1928
- species: Erigone hypenema Crosby & Bishop, 1928
- species: Erigone ostiaria Crosby & Bishop, 1928
- species: Erigone ourania Crosby & Bishop, 1928
- species: Erigone paradisicola Crosby & Bishop, 1928
- species: Erigone psychrophila Thorell, 1871
- species: Erigone whymperi O. P.-Cambridge, 1877
- species: Erigone zographica Crosby & Bishop, 1928
- genus: Mermessus
- species: Mermessus antraeus (Crosby, 1926)
- species: Mermessus brevidentatus (Emerton, 1909)
- species: Mermessus bryantae (Ivie & Barrows, 1935)
- species: Mermessus contortus (Emerton, 1882)
- species: Mermessus denticulatus (Banks, 1898)
- species: Mermessus entomologicus (Emerton, 1911)
- species: Mermessus index (Emerton, 1914)
- species: Mermessus indicabilis (Crosby & Bishop, 1928)
- species: Mermessus maculatus (Banks, 1892)
- species: Mermessus mniarus (Crosby & Bishop, 1928)
- species: Mermessus tenuipalpis (Emerton, 1911)
- species: Mermessus tridentatus (Emerton, 1882)
- species: Mermessus trilobatus (Emerton, 1882)
- genus: Montilaira