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Species Tabanus sulcifrons

Horse Fly - Tabanus sulcifrons - female Horse Fly - Tabanus sulcifrons - female BG1747 E2173 - Tabanus sulcifrons - male Horse Fly - Dorsal - Tabanus sulcifrons - male Horse Fly - Tabanus sulcifrons - male Tabanus sp. - Tabanus sulcifrons large fly - Tabanus sulcifrons - female Horse fly - Tabanus sulcifrons - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Infraorder Tabanomorpha
Family Tabanidae (Horse and Deer Flies)
Subfamily Tabaninae (Horse Flies)
Tribe Tabanini
Genus Tabanus
Species sulcifrons (Tabanus sulcifrons)
Print References
1.Burger, J.F. 1980. Redescription and lectotype designation of Tabanus sulcifrons Macquart (Diptera: Tabanidae), and comparison to related taxa. Proc. Entomol. Soc. Wash. 82(4): 660-667.
2.Pechuman, L.L., D.W. Webb, and H.J. Teskey. 1983. The Diptera, or True Flies of Illinois. I. Tabanidae. Illinois Natural History Survey Bulletin, Vol. 33 Article 1, 121 pp. Species discusion on pp.84-86.
Internet References
Photos of 3 females and 2 males HERE from Georgia
and several photos of a female HERE from Illinois
Note that the face views of the females from GA and IL make me wonder whether they are the same species. The GA female (#1465004) has long black palps, whereas the IL female has stout pale palps. The colour and shape of the palps are a useful species character in tabanids and vary little within a species.