Isotoma is a common genus of springtails, the type genus of the family Isotomidae, containing the following species:
Isotoma acrea Wray, 1953 Isotoma agrelli Delamare, 1950 Isotoma alaskana Christiansen & Bellinger, 1980 Isotoma alaskensis Fjellberg, 1978 Isotoma albella Packard, 1873 Isotoma alpa Christiansen & Bellinger, 1980 Isotoma anglicana Lubbock, 1873 Isotoma arborea Linnaeus, 1758 Isotoma arctica Schött, 1893 Isotoma aspera Bacon, 1914 Isotoma atkasukiensis Fjellberg, 1978 Isotoma beta Christiansen & Bellinger, 1980 Isotoma blufusata Fjellberg, 1978 Isotoma brucealla Wray, 1953 Isotoma caerulea Bourlet, 1839 Isotoma caeruleatra Guthrie, 1903 Isotoma canadensis Brown, 1932 Isotoma cancellarei Christiansen & Bellinger, 1980 Isotoma carpenteri Börner, 1909 Isotoma christianseni Fjellberg, 1978 Isotoma communa MacGillivray, 1896 Isotoma creli Fjellberg, 1978 Isotoma decorata (Brown, 1925) Isotoma diverticulata Yosii, 1966 Isotoma dispar Christiansen & Bellinger, 1988 Isotoma ekmani Fjellberg, 1977 Isotoma fennica Reuter, 1895 Isotoma flora Christiansen & Bellinger, 1980 Isotoma gelida Folsom, 1937 Isotoma glauca Packard, 1873 Isotoma gorodkovi Martynova, 1970 Isotoma hiemalis Schött, 1893 Isotoma inupikella Fjellberg, 1978 Isotoma japonica Yosii, 1939 Isotoma komarkovae Fjellberg, 1978 Isotoma longipenna MacGillivray, 1896 Isotoma louisiana Scott, 1962 Isotoma lucama Wray, 1952 Isotoma macleani Fjellberg, 1978 Isotoma manitobae Fjellberg, 1978 Isotoma manubriata MacGillivray, 1896 Isotoma marisca Christiansen & Bellinger, 1988 Isotoma marissa Folsom, 1937 Isotoma maxillosa Fjellberg, 1978 Isotoma melanocephala (Börner, 1909) Isotoma monochaeta Kos, 1942 Isotoma monta Christiansen & Bellinger, 1980 Isotoma multisetis Carpenter & Phillips, 1922 Isotoma nanseni Fjellberg, 1978 Isotoma neglecta Schäffer, 1900 Isotoma nepalica (Yosii, 1966) Isotoma nigrifrons Folsom, 1937 Isotoma nishihirai Yosii, 1965 Isotoma nixoni Fjellberg, 1978 Isotoma notabilis Schäffer, 1896 Isotoma nympha Snider & Calandrino, 1987 Isotoma persea Wray, 1952 Isotoma pinnata Börner, 1909 Isotoma propinqua Axelson, 1902 Isotoma pseudocinerea Fjellberg, 1975 Isotoma quadra Christiansen & Bellinger, 1980 Isotoma randiella Fjellberg, 1978 Isotoma riparia (Nicolet, 1842) Isotoma sandersoni Wray, 1952 Isotoma sensibilis Tullberg, 1876 Isotoma spatulata Chamberlain, 1943 Isotoma speciosa MacGillivray, 1896 Isotoma sphagneticola Linnaniemi, 1912 Isotoma spinicauda (Bonet, 1930) Isotoma subaequalis Folsom, 1937 Isotoma subviridis Folsom, 1937 Isotoma taigicola Fjellberg, 1978 Isotoma tariva Wray, 1953 Isotoma tigrina Nicolet, 1842 Isotoma torildae Fjellberg, 1978 Isotoma tridentata MacGillivray, 1896 Isotoma trispinata MacGillivray, 1896 Isotoma tuckeri Christiansen & Bellinger, 1980 Isotoma tunica Christiansen & Bellinger, 1980 Isotoma uniens Christiansen & Bellinger, 1980 Isotoma variodentata Dunger, 1982 Isotoma virgata Yosii, 1963 Isotoma viridis Bourlet, 1839 Isotoma walkerii Packard, 1871
More recent study meanwhile assigns many of these taxa to other genera than Isotoma, e. g. Desoria, Parisotoma, or Vertagopus. Potapov (2001) " lists 14 valid Isotoma species for the Palearctic realm, these are in bold in the list above. The most common species in Central Europe are Isotoma viridis, which dwells natural as well as disturbed habitats, while I. caerulea prefers dryer habitats, I. anglicana cooler climates, and I. riparia streambanks and coastal shorelines. References