Kingdom Protoctista Hogg, 1860
   Phylum Microspora Sprague, 1977 - microsporans see Phylum Microsporida Balbiani, 1882
     Class Rudimicrosporea Sprague, 1977
       Order Metchnikovellida Vivier, 1975
         Family Metchnikovellidae Caullery & Mesnil, 1914
           1 Genus Metchnikovella Caullery & Mesnil, 1897
           1.1 Genus Caulleryetta Dogiel, 1922
           1.2 Genus Microsporidiopsis Schereschewsky, 1925
           2 Genus Amphiamblys Caullery & Mesnil, 1914
           3 Genus Amphiacantha Caullery & Mesnil, 1914, nom. illeg.