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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » Orthorrhapha » Tabanomorpha » Horse and Deer Flies (Tabanidae) » Horse Flies (Tabaninae) » Tabanini » Tabanus » Tabanus aegrotus
Photo#295390
Black Horse Fly - Tabanus aegrotus - female
Copyright © 2009 Arlo Pelegrin

Black Horse Fly - Tabanus aegrotus - Female
Grays River, Wahkiakum County, Washington, USA
June 22, 2009
Size: 22mm
Looks like some of the pictures of T. atratus, but quite unlike others of the same species! How can there be such drastic phenotypic plasticity? Or is this species page in error?

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Black Horse Fly - Tabanus aegrotus - female Black Horse Fly - Tabanus aegrotus - female
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Contributed by Arlo Pelegrin on 28 June, 2009 - 1:38pm
Last updated 3 May, 2017 - 6:46pm

Moved
Moved from Tabanus. T. atratus is not on the west coast. It's good you got more photos of this species as it is pretty common in the Northwest.
… Keith Bayless, 1 July, 2009 - 4:11pm login or register to post comments

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