Tabanus petiolatus is a species of horse fly in the family Tabanidae.[3][4] Unlike many Tabanus species, the colour pattern of male eyes is found in the larger, upper lenses - appearing as a dark, brown streak across the light coloured lens. Females of this species have uniformly coloured dark brown eyes. Often confused with Tabanus melanocerus or Tabanus trimaculatus.
^Philip, C.B. (1950). "New North American Tabanidae (Diptera). Part II. Tabanidae [sic] [=Tabaninae]; III. Notes on Tabanus molestus and related horseflies with a prominent single row of triangles on the abdomen". Annals of the Entomological Society of America. 43: 240–248.
^Burger, J. F. (1995). "Catalog of Tabanidae (Diptera) in North America north of Mexico". International Contributions on Entomology. 1 (1). Associated Publishers: 1–100.
