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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » Orthorrhapha » Tabanomorpha » Horse and Deer Flies (Tabanidae) » Deer Flies (Chrysopsinae) » Chrysopsini » Chrysops » calvus and niger (Chrysops calvus and niger) » Chrysops niger
Photo#192234
Deer Fly - Chrysops niger - female
Copyright © 2008 Stephen Luk

Deer Fly - Chrysops niger - Female
Mill Pond Park, Richmond Hill, York Region, Ontario, Canada
June 14, 2008
Size: 7.5 mm
Landed on clothing. Looks like C. calvus - would like confirmation before moving to species page, since it could also be niger.

Images of this individual: tag all
Deer Fly - Chrysops niger - female Deer Fly - Chrysops niger - female
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Contributed by Stephen Luk on 19 June, 2008 - 1:13pm
Last updated 1 August, 2008 - 11:32am

Thanks Tony
I wasn't completely sure of calvus, knowing that niger could be around too. And, I couldn't really tell "how absent" the yellow stripe is in the existing niger images. I'll know from now on.
… Stephen Luk, 19 June, 2008 - 8:41pm login or register to post comments

 
Besides
the colour of the stripe, calvus has the top of vertex shiny; in niger there is a pruinose stripe across the top (back) of the vertex which I think I see in your photo.
I am preparing a key to the eastern tabanids for CJAI. Am going to need images of live specimens (face, dorsal, lateral) of the species that I can't get locally - several from Ontario. Teskey's 1990 paper lists all the species from every province.
… A.W. Thomas, 20 June, 2008 - 7:30am login or register to post comments

 
I know a friend of mine
... is currently assisting Stephen Marshall to edit and add distribution maps to your printed eastern Tabanids key.
I found I've taken on an interest in Tabanids, and will be on the lookout for more Chrysops this summer. So, hopefully will be posting more of these flies. Don't have a copy of Teskey 1990, though.
… Stephen Luk, 20 June, 2008 - 10:02am login or register to post comments

It is
niger
… A.W. Thomas, 19 June, 2008 - 8:34pm login or register to post comments

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