Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes


Family Gyrinidae - Whirligig Beetles

Whirligig Beetle - Gyrinus emarginatus or americanus?? - First PA Datapoint - Dineutus whirligig - Dineutus Whirligig Beetle - Gyrinus lecontei - male Whirligig Beetle - Dineutus emarginatus - male aquatic cutie - Dineutus Whirligig with eggs (Dineutus sp?) - Dineutus ciliatus Whirligig beetle - Dineutus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Gyrinidae (Whirligig Beetles)
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 (1)
Works Cited
1.American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia
Arnett, R.H., Jr., and M. C. Thomas. (eds.). 2000. CRC Press LLC, Boca Raton, FL.