[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Enterozoa
     Grade Cœlomata
       Phylum Appendiculata {Lankester}
         Branch Gnathopoda Straus-Durkheim, 1829
           Grade Condylopoda
             Class Insecta Hexapoda
               Grade Sugentia
                 Order Rhyncota
                   1 Genus Aphis Linnaeus, 1758
                   2 Genus Cicada Linnaeus, 1758
                   3 Genus Nepa Linnaeus, 1758
                   4 Genus Cimex Linnaeus, 1758