New records of beetles from families Haliplidae, Dytiscidae, Hydraenidae, Helophoridae, Hydrophilidae, Scirtidae and Chrysomelidae (Coleoptera) from the North Caucasus

Three species of beetles are recorded for Russia for the first time: Hydraena pontica Janssens, 1963 (Hydraenidae), Helophorus hilaris Sharp, 1916 (Helophoridae), Laccobius obscuratus Rottenberg, 1874 (Hydrophilidae). Two species are recorded for the first time for the North Caucasus: Haliplus