Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Hexapoda Latreille, 1825 see Epiclass Hexapoda Latreille, 1825
       Class Insecta Linnaeus, 1758 - insects
         Order Coleoptera Linnaeus, 1758 - beetles
           Suborder Polyphaga Emery, 1886
             Series Elateriformia Crowson, 1960
               Superfamily Byrrhoidea Latreille, 1804
                 01 Family Byrrhidae Latreille, 1804
                 02 Family Elmidae Curtis, 1830
                 03 Family Dryopidae Billberg, 1820 (1817)
                 04 Family Lutrochidae Kasap & Crowson, 1975
                 05 Family Limnichidae Erichson, 1846
                 06 Family Heteroceridae MacLeay, 1825
                 07 Family Psephenidae Lacordaire, 1854
                 08 Family Cneoglossidae Champion, 1897
                 09 Family Ptilodactylidae Laporte, 1836
                 10 Family Chelonariidae Blanchard, 1845
                 11 Family Eulichadidae Crowson, 1973
                 12 Family Callirhipidae Emden, 1924