[Order] Coleoptera Linnaeus, 1758 - beetles
   Suborder Myxophaga Crowson, 1955 - skiff beetles
     Family Hydroscaphidae LeConte, 1874
       1 Genus Hydroscapha LeConte, 1874
       2 Genus Yara Reichardt & Hinton, 1976
       3 Genus Scaphydra Reichardt, 1973