Isotomidae is a family of elongate-bodied springtails in the order Entomobryomorpha. Genera These 109 genera belong to the family Isotomidae: Aackia Yosii, 1966 Acanthomurus Womersley, 1934 c g Aggressopygus Potapov & Babenko, 2014 g Agrenia Boerner, 1906 i g b Antarcticinella Salmon, 1965 g Antarctophorus Potapov, 1992 i c g Anurophorus Nicolet, 1842 i c g b Appendisotoma Stach, 1947 g Araucanocyrtus Massoud & Rapoport, 1968 Archisotoma Linnaniemi, 1912 i c g Arlea Womersley, 1939 Axelsonia Boener, 1906 i c g Ballistura Börner, 1906 c g b Biacantha Martynova, 1971 g Blissia Rusek, 1985 i c g Bonetrura Christiansen and Bellinger, 1980 i c g Burmisotoma Christiansen & Nascimbene, 2006 g Coloburella Latzel, 1918 i c g Cryptopygus Willem, 1901 i c g Cylindropygus Deharveng, Potapov & Bedos, 2005 i c g Dagamaea Yosii, 1965 b Degamaea Yosii, 1965 i c g Desoria Agassiz & Nicolet, 1841 c g b Dimorphacanthella Potapov, Bu, Huang, Gao & Luan, 2010 g Dimorphotoma Grinbergs, 1975 g Ephemerotoma g Folsomia Willem, 1902 i c g b Folsomides Stach, 1922 i c g Folsomina Denis, 1931 i c g Folsomotoma c g Gnathisotoma Cassagnau, 1957 g Gnathofolsomia Deharveng & Christian, 1984 g Gressittacantha Wise, 1967 i c g Guthriella Börner, 1906 g b Halisotoma c g Haploisotoma Izarra, 1965 i c g Hemisotoma Bagnall, 1949 i c g Heteroisotoma Stach, 1947 g Hydroisotoma Stach, 1947 g b Isotoma Bourlet, 1839 i c g b IsotomediaSalmon, 1944 c g Isotomiella Bagnall, 1939 i c g b Isotomina g Isotomodella Martynova, 1968 i c g Isotomodes Axelson, 1907 i c g Isotomurus Boerner, 1903 i c g b Isotopenola Potapov, Babenko, Fjellberg & Greenslade, 2009 g Jesenikia Rusek, 1997 i c g Jestella Najt, 1978 Kaylathalia Stevens & D'Haese, 2016 g Marisotoma Fjellberg, 1997 g Martynovella Deharveng, 1978 g Metisotoma Maynard, 1951 i c g b Micranurophorus Bernard, 1977 i c g Micrisotoma Bellinger, 1952 i c g Millsia Womersley, 1942 Mucracanthus Stebaeva, 1976 Mucronia Fjellberg g Mucrosomia Bagnall, 1949 i c g Mucrotoma Rapoport & Rubio, 1963 i c g Myopia Chrisiansen & Bellinger, 1980 g Narynia Martynova, 1967 g Neocryptopygus Salmon, 1965 i c g Neophorella Womersley, 1934 Octodontophora Chelnokov, 1990 Pachyotoma Bagnall, 1949 g Papillomurus c g Paracerura Deharveng & de Olivei, 1994 g Parafolsomia Salmon, 1949 g Parisotoma Bagnall, 1940 c g b Pectenisotoma Gruia, 1983 i c g Pentacanthella Deharveng, 1979 ProceruraSalmon,