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 Ophryocystidae Léger & Duboscq, 1908
               1 Genus Ophryocystis Schneider, 1883
               2 Genus Apicystis Lipa & Triggiani, 1996