Horse Fly - Tabanus sulcifrons
Order Diptera / Suborder Brachycera / Infraorder Tabanomorpha / Family Tabanidae -- clegs, deer flies, horse flies, mouches à cheval, mouches à chevreuil, taons
Subfamily Tabaninae / Tribe Tabanini / Genus Tabanus    
Live adult fly photographed at Waterfall Glen Forest Preserve, DuPage County Illinois, USA.  Size: 19mm not including antennae


 
 
 


 

 

Horse Fly Eyes - Faceted structure breaks white light into the colors of the rainbow.
 

 
 

               
 
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