Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
       Class Malacostraca Latreille, 1802
         Subclass Eumalacostraca Grobben, 1892
           Superorder Peracarida Calman, 1904
             Order Isopoda Latreille, 1817 - isopods
               Suborder Epicaridea Latreille, 1831
                 Genus Aporobopyrus Nobili, 1906
                 Genus Bopyrus Latreille, 1802
                 Genus Dajus Krøyer, 1849
                 Genus Ione Latreille, 1817
                 Genus Phryxus Rathke, 1843, nom. illeg.