Identification
4 Neartic Genera
Spanglerogyrus - < 3mm (1 sp. South, East)
Gyretes - 3-5mm; pronotal/elytral margins pubescent (4 spp. West, South)
Dineutus - 9-15 mm (41 spp. Widespread)
Gyrinus - 4-7 mm (14 spp Widespread)
That should be all you need to key it out... be sure to give a size when you post something
Print References
America Beetles, Vol. 1, Chapter 7
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