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Genus Omophron - Round Sand Beetles

Omophron labiatum ? - Omophron labiatum Round Sand Beetle - Omophron americanum omophron americanus ? - Omophron americanum Round Sand Beetle - Omophron americanum Omophron nitidum LeConte - Omophron nitidum Omophron tesselatum - Omophron tessellatum 9526 - Omophron dentatum Mosaic Round Sand Beetle - Omophron tessellatum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga
Family Carabidae (Ground Beetles)
Subfamily Omophroninae
Tribe Omophronini
Genus Omophron (Round Sand Beetles)
Other Common Names
Hunchbacked Beetles
Synonyms and other taxonomic changes
revised in (1)
Explanation of Names
Omophron Latreille 1802
Greek 'savage-like'(2)
Numbers
11 spp. in our area (all in the nominate subgenus), ~70 spp. in 2 subgenera total(3)
Size
5-8 mm
Identification

Keys to spp.: NA(1), ne NA(4)(5), SC(6)
Range
NA (Canada to Costa Rica), Eurasia & Africa(3)(7)
Habitat
Wet sand near water(7)
Remarks
adults nocturnal and gregarious, seen mostly running over the sand or burrowing in it (particularly under stones); occasionally run on water. Some come to lights.(7)
Works Cited
1.A revision of the genus Omophron (Coleoptera: Carabidae) of North America north of Mexico.
Benschoter, C.A. and Cook, E.F. 1956. Annals of the Entomological Society of America 49(5): 411-429.
2.An illustrated descriptive catalogue of the Coleoptera or beetles (exclusive of the Rhynchophora) known to occur in Indiana.
Blatchley, W. S. 1910. Indianapolis,Nature Pub. Co.
3.Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico
Bousquet Y. 2012. ZooKeys 245: 1–1722.
4.The Beetles of Northeastern North America, Vol. 1 and 2.
Downie, N.M., and R.H. Arnett. 1996. The Sandhill Crane Press, Gainesville, FL.
5.Illustrated Identification Guide to Adults and Larvae of Northeastern North American Ground Beetles (Coleoptera: Carabidae)
Yves Bousquet. 2010. Pensoft Publishers.
6.Ground Beetles and Wrinkled Bark Beetles of South Carolina
Janet Ciegler. 2000. Clemson University.
7.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.