Order Coleoptera Linnaeus, 1758 - beetles Family group Palpicornia see Series Scarabaeiformia Crowson, 1960 Family Hydrophilidae Latreille, 1802 - water scavenger beetles Subfamily Sphaeridiinae (Latreille, 1802) Genus Cercyon Leach, 1817 Subgenus Dicyrtocercyon Ganglb.