Parvphylum Sporozoa Leuckart, 1879 see Superclass Sporozoa Leuckart, 1879
   Class Gregarinomorphea Grassé, 1953
     Subclass Orthogregarinia Cavalier-Smith, 2014
       Order Arthrogregarida Cavalier-Smith, 2014
         Suborder Terragregarina Cavalier-Smith, 2014
           Superfamily Actinocephaloidea Léger, 1892
             Family Syncystidae Schneider, 1886
               1 Genus Syncystis Schneider, 1886
               2 Genus Steinina Léger & Duboscq, 1904