materials from different regions of Russia are encoded as: FS RU CU UR WS SS MS CY NE NF KM AM SH KU

Gyrininae Regimbart, 1883
Aulonogyrus concinnus (Klug, 1834) RU Turkmenistan Kazakhstan
Gyrinus (Gyrinulus) minutus Fabricius, 1798 WS AM
Gyrinus (Gyrinus) paykulli Ochs, 1937 (=bicolor Paykull, 1798) WS
Gyrinus (Gyrinus) caspicus Ménétriès, 1832 Crimea Kazakhstan
Gyrinus (Gyrinus) natator (Linnaeus, 1758) RU WS SS
Gyrinus (Gyrinus) curtus Motschulsky, 1866 AM SH KU
Gyrinus (Gyrinus) colymbus Erichson, 1837 Austria
Gyrinus (Gyrinus) distinctus Aubé, 1836 CU Crimea
Gyrinus (Gyrinus) pullatus Zaitzev, 1907 SS AM
Gyrinus (Gyrinus) japonicus Sharp, 1873 AM
Gyrinus (Gyrinus) marinus Gyllenhal, 1808 RU WS Kazakhstan
Orectochilus villosus (Müller, 1776)
Orectochilus villosus villosus (Müller, 1776) WS
Orectochilus villosus dauricus Motschulsky, 1860 SS
Orectochilus landaisi Reg. Vietnam
Porrhorrhynchus marginatus Cast. Vietnam