Order Coleoptera Linnaeus, 1758 - beetles Family group Palpicornia see Series Scarabaeiformia Crowson, 1960 Family Hydrophilidae Latreille, 1802 - water scavenger beetles Subfamily Sphaeridiinae (Latreille, 1802) 1 Genus Coelostoma Brullé, 1835 2 Genus Sphaeridium Fabricius, 1775 3 Genus Cercyon Leach, 1817 4 Genus Megasternum Mulsant, 1844 5 Genus Cryptopleurum Mulsant, 1844