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 Cumacea Krøyer, 1846 - cumaceans
               Genus Campylaspis Sars, 1865
               Genus Cumopsis G.O. Sars, 1878
               Genus Diastylis Say, 1818
               Genus Diastylopsis Smith, 1880