Anthrobia acuminata (Emerton, 1913) (<= Sciastes acuminatus) Anthrobia monmouthia Tellkampf, 1844 Aphileta microtarsus (Emerton, 1882) Aphileta misera (O. P.-Cambridge, 1882) Baryphyma trifrons (O. P.-Cambridge, 1863) (<= Minyrioloides trifons) Blestia sarcocuon (Crosby & Bishop, 1927) Carorita limnaea (Crosby & Bishop, 1927) Ceraticelus alticeps (Fox, 1891) Ceraticelus aremisiae Prentice & Redak, 2009 Ceraticelus atriceps (O. P.-Cambridge, 1874) Ceraticelus bryantae Kaston, 1945 Ceraticelus bulbosus (Emerton, 1882) Ceraticelus carinatus (Emerton, 1911) Ceraticelus crassiceps Chamberlin & Ivie, 1939 Ceraticelus emertoni (O.P.-Cambridge, 1874) Ceraticelus fastidiosus Crosby & Bishop, 1925 Ceraticelus fissiceps (O.P.-Cambridge, 1874) Ceraticelus laetabilis (O.P.-Cambridge, 1874) Ceraticelus laetus (O.P.-Cambridge, 1874) Ceraticelus laticeps (Emerton, 1894) Ceraticelus limnologicus Crosby & Bishop, 1925 Ceraticelus micropalpis (Emerton, 1882) Ceraticelus minutus (Emerton, 1882) Ceraticelus paludigenus Crosby & Bishop, 1925 Ceraticelus paschalis Crosby & Bishop, 1925 Ceraticelus phylax Ivie & Barrows, 1935 Ceraticelus pygmaeus (Emerton, 1882) Ceraticelus rowensis Levi & Levi, 1955 Ceraticelus savannus Chamberlin & Ivie, 1944 Ceraticelus similis (Banks, 1892) Ceraticelus tibialis (Fox, 1891) Ceraticelus vesperus Chamberlin & Ivie, 1939 Ceratinella acerea Chamberlin & Ivie, 1933 Ceratinella alaskae Chamberlin & Ivie, 1947 Ceratinella brunnea Emerton, 1882 Ceratinella ornatula (Crosby & Bishop, 1925) Ceratinops annulipes (Banks, 1892) Ceratinops crenatus (Emerton, 1882) Ceratinops inflatus (Emerton, 1923) Ceratinops latus (Emerton, 1882) Ceratinops rugosus (Emerton, 1909) Ceratinopsidis formosa (Banks, 1892) Ceratinopsis auriculata Emerton, 1909 Ceratinopsis interpres (O.P.-Cambridge, 1874) Ceratinopsis nigriceps Emerton, 1882 Cheniseo fabulosa Bishop & Crosby, 1935 Cnephalocotes obscurus (Blackwall, 1834) Collinsia holmgreni (Thorell, 1871) (<= Halorates holmgreni) Collinsia ksenia (Crosby & Bishop, 1928) (<= Halorates ksenius) Collinsia oxypaederotipus (Crosby, 1905) (<=Halorates oxypaederotipus) Collinsia plumosus (Emerton, 1882) (<= Halorates plumosa) Coloncus siou Chamberlin, 1949
Coreorgonal monoceros (Keyserling, 1884) Dicymbium elongatum (Emerton, 1882) Dietrichia hesperia Crosby & Bishop 1933 Diplocentria bidentata (Emerton) 1882 Diplocentria rectangulata (Emerton) 1915 Diplocephalus barbiger (Roewer, 1955) Diplocephalus cristatus (Blackwall) 1833 Diplocephalus subrostratus (O.P.-Cambridge, 1873) Disembolus alpha (Chamberlin, 1948) Disembolus anguineus Millidge, 1981 Disembolus bairdi Edwards, 1999 Dismodicus alticeps Chamberlin & Ivie 1947 Dismodicus bifrons (Blackwall, 1841) Dismodicus decemoculatus (Emerton, 1882) Entelecara sombra (Chamberlin & Ivie) 1947 Epiceraticelus fluvialis Crosby & Bishop, 1930 Eridantes erigonoides (Emerton, 1882) Erigone aletris Crosby & Bishop, 1928 Erigone arctica (White, 1852) Erigone atra Blackwall, 1833 Erigone autumnalis Emerton, 1882 Erigone barrowsi Crosby & Bishop, 1928 Erigone blaesa Crosby & Bishop, 1928 Erigone canthognatha Chamberlin & Ivie, 1935 Erigone capra Simon, 1884 (=> Erigone dentigera, disputed) Erigone dentigera O.P.-Cambridge, 1874 Erigone dentosa O.P.-Cambridge, 1894 Erigone hypenema Crosby & Bishop, 1928 Erigone psychrophila Thorell, 1871 Eulaira arctoa Holm, 1960 Eulaira chelata Chamberlin & Ivie, 1939 Eulaira dela Chamberlin & Ivie, 1933 Floricomus tallulae Chamberlin & Ivie, 1944 Frederickus coylei Paquin et al., 2008 Frederickus wilburi (Levi & Levi, 1955) Glyphesis idahoanus (Chamberlin, 1948) Glyphesis scopulifer (Emerton, 1882) Gnathonarium dentatum (Wider, 1834) Gnathonarium suppositum (Kulczyn'ski, 1885). Gnathonarium taczanowskii (O. P.-Cambridge, 1873) Gnathonaroides pedalis (Emerton, 1923) Gonatium crassipalpum Bryant, 1933 Goneatra platyrhinus Crosby & Bishop, 1927 Grammonota angusta Dondale 1959 Grammonota capitata Emerton, 1924 Grammonota coloradensis Dondale, 1959 Grammonota gentilis Banks, 1898 Grammonota gigas (Banks, 1896) Grammonota inornata Emerton, 1882 Grammonota kincaidi (Banks, 1906) Grammonota maculata Banks, 1896 Grammonota ornata (O.P.-Cambridge, 1875)
Grammonota pallipes Banks, 1895 Grammonota pictilis (O.P.-Cambridge, 1875) Grammonota subarctica Dondale, 1959 Grammonota texana Banks, 1899 Grammonota vittata Barrows, 1919 Hilaira canaliculatа (Emerton, 1915) (<=Soudinus canaliculatus) Hilaira herniosa (Thorell, 1875) Hilaira vexatrix (O.P.-Cambridge, 1877) Horcotes quadricristatus (Emerton, 1882) Horcotes strandi (Sytshevskaja, 1935) Hybauchenidium aquilionare L. Koch, 1879 Hybauchenidium cymbadentatum (Crosby & Bishop, 1935) Hybauchenidium gibbosum (Sørensen) 1898 Hypomma marxi (Keyserling, 1886) Hypselistes florens (O.P.-Cambridge, 1875) Idionella formosa (Banks, 1892) Idionella nesiotes (Crosby, 1924) Idionella sclerata (Ivie & Barrows, 1935) (<= Grammonota sclerata) Idionella tugana (Chamberlin, 1948) Islandiana coconino Ivie, 1965 Islandiana falsifica (Keyserling, 1886) Islandiana flaveola (Banks, 1892) Islandiana holmi Ivie, 1965 Islandiana lasalana (Chamberlin & Ivie, 1935) Islandiana unicornis Ivie, 1965 Maso sundevalli (Westring, 1851) Masoncus arienus Chamberlin, 1949 Masoncus pogonophilus Cushing, 1995 Mecynargus monticola Holm, 1943 Mermessus albulus (Zorsch & Crosby, 1934) Mermessus bryantae (Ivie & Barrows, 1935) Mermessus denticulatus (Banks, 1898) Mermessus entomologicus (Emerton, 1911) Mermessus fradeorum (Berland, 1932) Mermessus maculatus (Banks, 1892) Mermessus tridentatus (Emerton, 1882) Mermessusa trilobatus (Emerton, 1882) Metopobactrus prominulus (O. P.-Cambridge, 1872) Micrargus longitarsus (Emerton, 1882) Mythoplastoides erectus (Emerton, 1915) Mythoplastoides exiguus (Banks, 1892) Oedothorax alascensis (Banks, 1900) (<= Halorates alascensis) Oedothorax trilobatus (Banks, 1896) Oreonetides rectangulatus (Emerton, 1913) Oreonetides vaginatus (Thorell, 1872) Origanates rostratus (Emerton, 1882) Pelecopsidis frontalis (Banks, 1904) Pelecopsis bishopi (Kaston, 1945) Pelecopsis mengei (Simon) 1884 Pelecopsis sculpta (Emerton, 1917) Perregrinus deformis (Tanasevitch, 1982) Phanetta subterranea (Emerton, 1875)
Pocadicnemis americana Millidge, 1976 Pocadicnemis pumila (Blackwall, 1841) Satilatlas gentilis Millidge, 1981 Sciastes truncatus (Emerton) 1882 Scirites pectinatus (Emerton, 1911) Scironis sima Chamberlin, 1949 Scironis tarsalis (Emerton, 1911) Scotinotylus alpinus (Banks, 1896) Scotinotylus exsectoides Millidge, 1981 Scotinotylus majesticus (Chamberlin & Ivie, 1947) Scotinotylus pallidus (Emerton, 1882) Scotinotylus patellatus (Emerton, 1917) Scotinotylus pollucis Millidge, 1981 Scotinotylus sacer (Crosby, 1929) Scotinotylus sanctus (Crosby, 1929) Scotinotylus vernalis (Emerton, 1882) Scylaceus pallidus (Emerton, 1882) Scyletria inflata Bishop & Crosby 1938 Semljicola obtusus (Emerton, 1915) Sisicottus crossoclavis Miller, 1999 Sisicottus montanus (Emerton, 1882) Sisicottus nesides (Chamberlin, 1921) Sisicottus orites (Chamberlin, 1919) Sisicottus panopeus Miller, 1999 Sisicus apertus (Holm, 1939) Sisicus penifusifer Bishop & Crosby, 1938. Sisis rotundus (Emerton, 1925 Sitalcas ruralis Bishop & Crosby, 1938 Soucron arenarium (Emerton, 1925) Souessa spinifera (O. P.-Cambridge, 1874) Souessoula parva (Banks, 1899) Sougambus bostoniensis (Emerton) 1882 Soulgas corticarius (Emerton, 1909) Spirembolus demonologicus (Crosby, 1925) Spirembolus erratus Millidge, 1980 Spirembolus hibernus Millidge, 1980 Spirembolus novellus Millidge, 1980 Spirembolus pallidus Chamberlin & Ivie, 1935 Spirembolus pusillus Millidge, 1980 Spirembolus redondo (Chamberlin & Ivie, 1945) Spirembolus spirotubus (Banks, 1895) Styloctetor purpurescens (Keyserling, 1886) (<= Ceratinopsis purpurescens) Symmigma minimum (Emerton, 1923) Tachygyna haydeni Chamberlin & Ivie, 1939 Tachygyna tuoba Chamberlin & Ivie, 1933 Tachygyna ursina (Bishop & Crosby, 1938) Tachygyna vancouverana Chamberlin & Ivie, 1939 Tapinocyba dietrichi Crosby & Bishop, 1933 Tapinocyba simplex (Emerton, 1882) Thyreosthenius parasiticus (Westring, 1851) Tiso vagans (Blackwall, 1834) Tmeticus ornatus (Emerton, 1914)
Traematosisis bispinosus (Emerton, 1911) Tunagyna debilis (Banks 1892) Vermontia thoracica (Emerton, 1913) Wabasso cacuminatus Millidge, 1984 Walckenaeria atrotibialis (O.P.-Cambridge, 1878) Walckenaeria auranticeps (Emerton, 1882) Walckenaeria brevicornis (Emerton, 1882) Walckenaeria carolina Millidge, 1983 Walckenaeria castanea (Emerton, 1882) Walckenaeria clavicornis Emerton, 1882 Walckenaeria columbia Millidge, 1983 Walckenaeria communis (Emerton, 1882) Walckenaeria cornuella (Chamberlin & Ivie, 1939) Walckenaeria digitata (Emerton, 1913) Walckenaeria directa (O.P.-Cambridge, 1874) Walckenaeria dixiana (Chamberlin & Ivie, 1944) Walckenaeria exigua Millidge 1983 Walckenaeria floridiana Millidge, 1983 Walckenaeria fraudatrix Millidge, 1983 Walckenaeria helenae Millidge, 1983 Walckenaeria indirecta (O.P.-Cambridge, 1874) Walckenaeria karpinkskii (O. P.-Cambridge, 1873) Walckenaeria kochii (O.P.-Cambridge) 1872 Walckenaeria lepida (Kulczyn'ski, 1885) Walckenaeria minuta (Emerton, 1882) Walckenaeria pallida (Emerton, 1882) Walckenaeria palustris Millidge, 1983 Walckenaeria spiralis (Emerton, 1882) Walckenaeria subdirecta Millidge, 1983 Walckenaeria subspiralis Millidge, 1983 Walckenaeria tibialis (Emerton, 1882) Walckenaeria tricornis (Emerton, 1882) Walckenaeria tumida (Crosby & Bishop, 1931) Walckenaeria vigilax (Blackwall, 1853) Zornella armata (Banks, 1906) Zornella cryptodon (Chamberlin) 1920 Zornella armata (Banks, 1906) Zygottus corvallis Chamberlin, 1949