Order Coleoptera Linnaeus, 1758 - beetles Family group Adephaga Clairville, 1806 see Suborder Adephaga Schellenberg, 1806 Family Dytiscidae Leach, 1815 - predaceous diving beetles Subfamily Dytiscinae (Leach, in Brewster, 1815) Genus Graphoderus Dejean, 1833