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 Myxophaga Crowson, 1955 - skiff beetles
             Superfamily Sphaeriusoidea Erichson, 1845
               1 Family Torridincolidae Steffan, 1964
               2 Family Hydroscaphidae LeConte, 1874
               3 Family Sphaeriusidae Erichson, 1845