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''Tabanus sulcifrons'' is a species of 
horse fly
Horse flies and deer flies are true flies in the family Tabanidae in the insect Order (biology), order Diptera. The adults are often large and agile in flight. Only females bite land vertebrates, including humans, to hematophagy, obtain blood ...
in the family Tabanidae
Horse flies and deer flies are true flies in the family Tabanidae in the insect order Diptera. The adults are often large and agile in flight. Only females bite land vertebrates, including humans, to obtain blood. They prefer to fly in sunli ...
, widely distributed throughout the eastern half of the United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
and adjacent regions of southern Canada.
Subspecies
These two subspecies belong to the species ''Tabanus sulcifrons'': * ''Tabanus sulcifrons sulcifrons'' Macquart, 1855 * ''Tabanus sulcifrons variegatus'' Fabricius, 1805References
Tabanidae Insects described in 1855 Diptera of North America Taxa named by Pierre-Justin-Marie Macquart {{tabanoidea-stub