Review of species of genus Cercyon Leach, 1817 of Russia and adjacent regions. III. Subgenera Clinocercyon Orchymont, 1942 and Conocercyon Hebauer, 2003 (Coleoptera: Hydrophilidae)

Morphological diagnoses, distribution and environmental preferences of species of the subgenera Clinocercyon Orchymont, 1942 and Conocercyon Hebauer, 2003 from Russia and adjacent regions are presented. Subgenera Clinocercyon and Conocercyon are recorded from the Palaearctic for the first time, for some species previously placed in the subgenus Cercyon. Lectotypes of Cercyon placidus Sharp, C. aequalis Sharp, C. rubicundus Sharp, and C. vagus Sharp are designated.