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Family Gyrinidae - Whirligig Beetles

D. discolor? - Dineutus discolor Water Beetle - Gyrinus Whirligig Beetle - Dineutus assimilis - female 6026169 Dineutis - Dineutus sublineatus Beetle IMG_4693 - Dineutus Whirlygig Black water beetle - Dineutus Gyrinus elevatus - male
Classification
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
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 (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.