Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Class Insecta Linnaeus, 1758 - insects
       Order Coleoptera Linnaeus, 1758 - beetles
         Family Dytiscidae Leach, 1815 - predaceous diving beetles
           Genus Acilius Leach, 1817
           Genus Agabus Leach, 1817