Phylum Cercozoa Cavalier-Smith, 1998
   Order Cercomonadida Poche, 1913 - cercomonads
     Family Heteromitidae Kent, 1880
       Genus Katabia S.A. Karpov, F. Ekelund & Moestrup, 2003
         1 Katabia gromovi S.A. Karpov, F. Ekelund & Moestrup, 2003