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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Flies (Diptera) » "Orthorrhapha" (Brachycera excluding Aschiza and Schizophora) » Tabanomorpha » Horse and Deer Flies (Tabanidae) » Horse Flies (Tabaninae) » Tabanus » Western Horse Fly (Tabanus punctifer)
Photo#7191
Western Horsefly - Tabanus punctifer - male
Copyright © 2004 David Scriven

Western Horsefly - Tabanus punctifer - Male
Lakeview Mountains, near Hemet, California, USA
September 18, 2004
Tabanus punctifer

22 mm
found moribund, posed

same individual as:
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Contributed by David Scriven on 19 September, 2004 - 11:06pm
Last updated 18 May, 2005 - 5:22am

Tabanus punctifer
See comment under Image#7166.
Male Tabanus species often have the eyes divided into large facets at the top and small facets at the bottom (separated here by a white line); obvious in this specimen. Note also the single eye stripe within the small eye facets.
… Tony-2, 16 February, 2005 - 4:31pm login or register to post comments

Male
You can tell this is a male (and non-biter!), by the holoptic eyes. That means the eyes are so large they meet at the top of the head. Many male flies have this characteristic.
… Eric R. Eaton, 20 September, 2004 - 4:29pm login or register to post comments

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