Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Family Gyrinidae - Whirligig Beetles

Whirligig Beetle - Dineutus Water Beetle - Dineutus sublineatus small Whirligig Beetle - Gyrinus marginellus - female Backyard Beetle Family #50 - Dineutus Whirligig beetle- Gyrinus? - Gyrinus Gyrinidae Dineutus Diving Beetle maybe ? - Gyrinus
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)
Explanation of Names
Gyrinidae Latreille 1810
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)
Neartic Genera:
Spanglerogyrus <3mm (1 sp. South, East)
Gyretes 3-5 mm; pronotal/elytral margins pubescent (4 spp. West, South)
Dineutus 9-15 mm (41 spp. Widespread)
Gyrinus 4-7 mm (14 spp. Widespread)
be sure to give a size!
accessible keys in(4); new key to genera in(5)
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.
2.Order Coleoptera Linnaeus, 1758. In: Zhang Z.-Q. (ed.) Animal biodiversity: An outline of higher-level classification...
Slipinski S.A., Leschen R.A.B., Lawrence J.F. 2011. Zootaxa 3148: 203–208.
3.Phylogeny and classification of whirligig beetles (Coleoptera: Gyrinidae): relaxed-clock model outperforms parsimony...
Miller K.B., Bergsten J. 2012. Systematic Entomology 37: 706–746.
4.The Water Beetles of Florida
Epler J.H. 2010. Florida Department of Environmental Protection. Tallahassee. 414 pp.
5.The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini)
Gustafson GT, Miller KB. 2015. Zookeys; 476: 1-135.