Superfamily HYDROPHILOIDEA (atlas of beetles of Russia) Family Spercheidae (atlas of Spercheidae of Russia)
Spercheus emarginatus Schaller, 1783 N.Caucasus, Mineralnye Vody, Kuma river valley, small puddle, 7-IX-1975, leg. E.Berlov. The body length is 6 mm.
