Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Discussion, insects and people from the 2018 BugGuide Gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Species Tabanus gladiator

Horsefly - Tabanus gladiator Horse Fly - Tabanus gladiator Horse Fly - Tabanus gladiator Some sort of fly? - Tabanus gladiator Tabanus sp. - Tabanus gladiator Unknown Tabanidae - Tabanus gladiator Horse Fly - Tabanus gladiator Horse Fly - Tabanus gladiator
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 gladiator (Tabanus gladiator)
SEE HERE for anatomy (frons, palps, etc.).

Large, 22-25 mm;
Head: frons very narrow, about 6 times as high as width at base, parallel sided or slightly widened above.

Antennae: dark reddish brown, basal portion of 3rd segment with prominent dorsal angle and deep incision.

Palps: very long,dark, straplike, apex truncate (see head image above).
Thorax: reddish brown, fine hairs giving it a lavender tone.
Wings: costal cell orange brown (leading edge of wing); brown spot at bifurcation of R4 and R5 (top spot on wing); cross vein at end of cell margined with brown (bottom spot on wing); cell R5 narrowed at apex (cell between the 2 spots).

Legs: dark except apical half of fore tibia - pale.
Abdomen: orange brown, sometimes with an indication of median black spots.
Montana to Delaware, south to Texas and Florida.
May through October in Florida; shorter season northwards.
Print References
Original description, p.85-86, in: Stone, A. 1938.The horseflies of the subfamily Tabaninae of the Nearctic Region. USDA Misc. Publ, No. 305. 171 pp.

Burger, J.F. 1995. Catalog of Tabanidae (Diptera) of North America north of Mexico. Contributions on Entomology, International. Volume 1, Number 1. 100pp. (Taxonomy and distribution of the species)
Jones, C.M. and D.W. Anthony. 1964. The Tabanidae (Diptera) of Florida. USDA, Agriculture Research Service, Technical Bulletin No. 1295. 85 pp.
Internet References
Photos of males and females from Geogia HERE