Isotomidae
Proisotoma admaritima Mrphy
Proisotoma aera Christiansen & Bellinger, 1980
Proisotoma alpa Christiansen & Bellinger, 1980
Proisotoma ananevae Babenko & Bulavintsev, 1993
Proisotoma antigua (Folsom, 1937)
Proisotoma armeriae Fjellberg, 1976
Proisotoma atrata (Salmon, 1941)
Proisotoma bayouensis Mills, 1931
Proisotoma beta Christiansen & Bellinger, 1980
Proisotoma brevidens Stach, 1947
Proisotoma brisbanensis Womersley, 1935
Proisotoma buddenbrocki Strenzke, 1954
Proisotoma bulba Christiansen & Bellinger, 1980
Proisotoma bulbosa Folsom, 1937
Proisotoma clavipila Axelson, 1903
Proisotoma coeca da Gama, 1961
Proisotoma crassicauda (Tullberg, 1871)
Proisotoma dottrensi Gisin, 1949
Proisotoma dubia Christiansen & Bellinger, 1980
Proisotoma ewingi James, 1933
Proisotoma excavata Folsom, 1937
Proisotoma extra Christiansen & Bellinger, 1980
Proisotoma frisoni Folson, 1937
Proisotoma fungi Selga, 1962
Proisotoma haweaensis (Salmon, 1941)
Proisotoma immersa (Folsom, 1937)
Proisotoma juaniae Lucianez & Simon, 1992
Proisotoma laticauda Folsom, 1937
Proisotoma libra Christiansen & Bellinger, 1980
Proisotoma macgillivaryi (Della Torre, 1895)
Proisotoma mackenziana Hammar, 1952
Proisotoma minima (Absolon, 1901)
Proisotoma minuta (Tullberg, 1871)
Proisotoma muskegis (Guthrie, 1903)
Proisotoma najtae Selga, 1971
Proisotoma niger (Carpenter, 1925)
Proisotoma nova Palissa, 1969
Proisotoma obsoleta (Macgillivray, 1896)
Proisotoma octojuga Salmon, 1949
Proisotoma okukensis (Salmon, 1941)
Proisotoma papillosa Stach, 1947
Proisotoma rainieri Folsom, 1937
Proisotoma ripicola Linnaniemi, 1912
Proisotoma schoetti (Dalla Torre, 1895)
Proisotoma sepulchralis (Folsom, 1902)
Proisotoma subarctica Gisin, 1950
Proisotoma subminuta Denis, 1931
Proisotoma tenella (Reuter, 1895)
Proisotoma terrigenus (Salmon, 1943)
Proisotoma titusi Folsom, 1937
Proisotoma turberculatum Stach, 1947
Proisotoma veca (Wray, 1952)
Proisotoma vernoga (Wray, 1958)
Proisotoma vesiculata Folsom, 1937
Proisotoma vetusta (Folson, 1937)
Proisotoma woodi Christiansen & Bellinger, 1980
Proisotoma xanthella Salmon, 1949