Agmasoma Hazard & Oldacre, 1975 (basis of record)
Alfvenia Larsson, 1983 (basis of record)
Amblyospora Hazard & Oldacre, 1975 (basis of record)
Ameson Sprague, 1977 (basis of record)
Amphiacantha Caullery & Mesnil, 1914 (basis of record)
Amphiamblys Caullery & Mesnil, 1914 (basis of record)
Baculea Loubès & Akbarieh, 1978 (basis of record)
Berwaldia Larsson, 1981 (basis of record)
Bohuslavia Larsson, 1985 (basis of record)
Burenella Jouvenaz & Hazard, 1978 (basis of record)
Burkea Sprague, 1977 (basis of record)
Buxtehudea Larsson, 1980 (basis of record)
Caudospora Weiser, 1946 (basis of record)
Chapmanium Hazard & Oldacre, 1975 (basis of record)
Chytridiopsis Schneider, 1884 (basis of record)
Cougourdella Hesse, 1935 (basis of record)
Cryptosporina Hazard & Oldacre, 1975 (basis of record)
Culicospora Weiser, 1977 (basis of record)
Duboscqia Pérez, 1908 (basis of record)
Episeptum Larsson, 1986 (basis of record)
Glugea Thélohan, 1891 (basis of record)
Golbergia Weiser, 1977 (basis of record)
Gurleya Doflein, 1898 (basis of record)
Hazardia Weiser, 1977 (basis of record)
Helmichia Larsson, 1982 (basis of record)
Hessea Ormières & Sprague, 1973 (basis of record)
Heterosporis Schubert, 1969 (basis of record)
Hirsutosporos Batson, 1983 (basis of record)
Hyalinocysta Hazard & Oldacre, 1975 (basis of record)
Ichthyosporidium Caullery & Mesnil, 1905 (basis of record)
Inodosporus Overstreet & Weidner, 1974 (basis of record)
Issia Weiser, 1977 (basis of record)
Janacekia Larsson, 1984 (basis of record)
Jirovecia Weiser, 1977 (basis of record)
Jiroveciana Larsson, 1981 (basis of record)
Loma Morrison & Sprague, 1981 (basis of record)
Metchnikovella Caullery & Mesnil, 1897 (basis of record)
Microgemma Ralphs & Matthews, 1986 (basis of record)
Microsporidium Balbiani, 1884 (extant flag source)
Microsporidium Balbiani, 1884 (basis of record)
Mitoplistophora Codreanu, 1966 (basis of record)
Mrazekia Léger & Hesse, 1916 (basis of record)
Nelliemelba Larsson, 1983 (basis of record)
Neoperezia Issi & Voronin, 1979 (basis of record)
Norlevinea Vávra, 1984 (basis of record)
Nosema Nägeli, 1857 (basis of record)
Nosemoides Vinckier, 1975 (basis of record)
Octosporea Flu, 1911 (basis of record)
Ormieresia Vivarès, Bouix & Manier, 1977 (basis of record)
Orthosoma Canning, Wigley & Barker, 1983 accepted as Orthosomella Canning, Wigley & Barker, 1991 (basis of record)
Parathelohania Codreanu, 1966 (basis of record)
Pegmatheca Hazard & Oldacre, 1975 (basis of record)
Perezia Léger & Dubosq, 1909 (basis of record)
Pilosporella Hazard & Oldacre, 1975 (basis of record)
Pleistophora Gurley, 1893 (basis of record)
Plistophora Gurley, 1893 accepted as Pleistophora Gurley, 1893 (extant flag source)
Plistophora Gurley, 1893 accepted as Pleistophora Gurley, 1893 (basis of record)
Pseudopleistophora Sprague, 1977 (basis of record)
Pyrotheca Hesse, 1935 (basis of record)
Spirillonema Wenyon, 1926 accepted as Toxoglugea Léger & Hesse, 1924 (extant flag source)
Spirillonema Wenyon, 1926 accepted as Toxoglugea Léger & Hesse, 1924 (basis of record)
Spirospora Kudo, 1925 accepted as Toxoglugea Léger & Hesse, 1924 (basis of record)
Steinhausia Sprague, Ormières & Manier, 1972 (basis of record)
Stempellia Léger & Hesse, 1910 (basis of record)
Systenostrema Hazard & Oldacre, 1975 (basis of record)
Telomyxa Léger & Hesse, 1910 (basis of record)
Tetramicra Matthews & Matthews, 1980 (basis of record)
Thelohania Henneguy, 1892 (basis of record)
Toxoglugea Léger & Hesse, 1924 (basis of record)
Toxonema Léger & Hesse, 1922 accepted as Toxoglugea Léger & Hesse, 1924 (basis of record)
Trichoduboscqia Léger, 1926 (basis of record)
Tuzetia Maurand, Fize, Fenwick & Michel, 1971 (basis of record)
Unikaryon Canning, Foon & Joe, 1974 (basis of record)
Vairimorpha Pilley, 1976 (basis of record)
Vavraia Weiser, 1977 (basis of record)
Weiseria Doby & Saguez, 1964 (basis of record)