Numbers
60 spp. in 4 genera in our area, ~900 spp. in 14 genera worldwide arranged into 3 subfamilies (all but 2 spp. are in the Gyrininae)
(1)(2)(3)Identification
Neartic genera:
Spanglerogyrus <3mm (1 sp. South, East)
Gyretes 3-5 mm; pronotal/elytral margins pubescent (4 spp. West, South)
Dineutus 9-15 mm (14 spp. Widespread)
Gyrinus 4-7 mm (>40 spp. Widespread)
accessible keys in
(4); new key to genera in
(5)