Phylum Arthropoda Siebold, 1848 - arthropods
   Superclass Crustacea Pennant, 1777 - crustaceans see [unranked] Crustaceomorpha Chernyshev, 1960
     Class Malacostraca Latreille, 1802
       Subclass Eumalacostraca Grobben, 1892
         Superorder Peracarida Calman, 1904
           Order Isopoda Latreille, 1817 - isopods
             Suborder Valvifera Sars, 1882
               Family Arcturidae Dana, 1849
                 1 Genus Astacilla Cordiner, [1793]
                 2 Genus Thermarcturus nom. null. see Genus Thermoarcturus Paul & Menzies, 1971