Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
     Class Flagellata see Subphylum Mastigophora Diesing, 1866
       Order Protomonadina see Phylum Zoomastigina
         Family Eumonadidae see Family Bodonidae Bütschli, 1887
           Genus [Costia] Leclercq, 1890 see Genus Ichthyobodo Pinto, 1928
             1 Costia necatrix (L.-F. Henneguy, 1883) Leclercq, 1890 see Ichthybodo necatrix