[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Enterozoa
     Grade Cœlomata
       Phylum Appendiculata {Lankester}
         Branch Gnathopoda Straus-Durkheim, 1829
           Grade Condylopoda
             Class Insecta Hexapoda
               Grade Masticantia
                 Order Coleoptera Linnaeus, 1758 - beetles
                   1 Genus Dystiscus Donovan, 1811, nom. null. see Genus Dytiscus Linnaeus, 1758
                   2 Genus Stylops Kirby, 1802