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Phylum Arthropoda
Class Insecta
Order Diptera
Suborder Orthorrhaphous-Brachycera
Family Tabanidae
Common Name  
Distinguishing Characteristics
  • Posterior spiracles present on slits on both sides of either, a vertically linear stigmatal bar, or a retractable laterally compressed spine
  • Body integument with longitudinal striations, except when covered by pubescence
  • First seven abdominal segments have no projections other than, 3-4 pairs of fleshy pseudopodia (setae-bearing swellings) or prolegs
Additional Pictures



QuickTime Movies


Additional Links



Merritt, R W., K W. Cummins, and M B. Berg. An Introduction to the Aquatic Insects of North America. Dubuque, Iowa: Kendall/Hunt Company, 2008