eukaryotes see Domain Eukaryota Chatton, 1925
   Protista Haeckel, 1866 see Kingdom protists
     parasitic protists
       01 Genus Amoeboaphelidium Scherffel, 1925
       02 Genus Amylophagus Scherffel, 1925
       03 Genus Aphelidiopsis Scherffel, 1925
       04 Genus Barbetia Dangeard, 1886
       05 Genus Bertarellia
       06 Genus Bertramia Mesnil & Caullery, 1897 see Genus Bertramia Mesnil & Caullery (1897)
       07 Genus Cibdelia Juel (1925)
       08 Genus Cingula Averincev, 1916, nom. illeg.
       09 Genus Cristalloidophora Dehorne, 1934
       10 Genus Cytamoeba
       11 Genus Dermocystidium Pérez, 1908
       12 Genus Dinemula Michajlow, 1965
       13 Genus Diplophysalis Zopf, 1885
       14 Genus Ducelleria
       15 Genus Echinococcidium Porchet, 1978
       16 Genus Ectobiella de Bruyne, 1890
       17 Genus Elleipsisoma Franca, 1912
       18 Genus Embryocola Michajlow, 1969
       19 Genus Endamoeba Leidy, 1879
       20 Genus Endemosarca Olive & Erdos, 1971
       21 Genus Endobiella de Bruyne, 1888
       22 Genus Endomonas Zopf, 1887
       23 Genus Endospora Scherff. (1925), nom. dub.
       24 Genus Eperythrocytozoon
       25 Genus Globidiellum Brumpt, 1913
       26 Genus Gymnococcus Zopf, 1884
       27 Genus Haematotractidium
       28 Genus Hyalochlorella Poyton (1970), nom. dub.
       29 Genus Ichthyophonus Plehn & Mulsow, 1911
       30 Genus Immnoplasma
       31 Genus Labyrinthomyxa Duboscq (1921), nom. conf. see Genus Labyrinthomyxa Duboscq, 1921
       32 Genus Lymphocytozoon
       33 Genus Lymphosporidium
       34 Genus Mononema Michajlow, 1967
       35 Genus Myrmicisporidium
       36 Genus Naupliicola Michajlow, 1965
       37 Genus Neurosporidium
       38 Genus Ovicola Michajlow, 1965
       39 Genus Palisporomonas
       40 Genus Paradinemula Monchenko, 1967
       41 Genus Paraplasma
       42 Genus Parastasia nom. illeg.
       43 Genus Parastasiella Michajlow, 1965
       44 Genus Physcosporidium
       45 Genus Piridium
       46 Genus Polysporella Zopf, 1887
       47 Genus Protenterospora
       48 Genus Protomonas Haeckel, 1866
       49 Genus Protomyxa Haeckel, 1868
       50 Genus Pseudaphelidium Schweikert & Schnepf, 1996
       51 Genus Pseudosporopsis Scherffel, 1925
       52 Genus Rhabdospora Laguesse, 1895
       53 Genus Rhinosporidium Minchin & Fantham, 1905
       54 Genus Rhyncodinium nom. null. see Genus Rhynchodinium Cunha & Penido, 1927
       55 Genus Sergentella
       56 Genus Serpentoplasma
       57 Genus Spermatobium Eisen, 1895
       58 Genus Sphaerasuctans
       59 Genus Spiriopsis
       60 Genus Spirogregarina
       61 Genus Toxocystis Léger & Duboscq, 1910
       62 Genus Trophosphaera Le Calvez, 1939
       63 X-cells