Order Coleoptera Linnaeus, 1758 - beetles Family group Adephaga Clairville, 1806 see Suborder Adephaga Schellenberg, 1806 Family Dytiscidae Leach, 1815 - predaceous diving beetles Subfamily Colymbetinae Erichson, 1837 Genus Rhantus Dejean, 1833 ex Lacordaire, in Boisduval & Lacordaire, 1835