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Photo#103790
BG723 C7702 - Hamatabanus exilipalpis - female

BG723 C7702 - Hamatabanus exilipalpis - Female
Gloster, Gloster Arboretum, Amite County, Mississippi, USA
April 12, 2007
Size: body length 13.8 mm.
Appears to be a Tabanid.
Proper placement would be appreciated
Gayle

Images of this individual: tag all
BG723 C7702 - Hamatabanus exilipalpis - female BG723 C7702 - Hamatabanus exilipalpis - female BG723 C7702 - Hamatabanus exilipalpis - female BG723 C7702 - Hamatabanus exilipalpis - female BG723 C7702 - Hamatabanus exilipalpis - female BG723 C7702 - Hamatabanus exilipalpis - female BG723 C7702 - Hamatabanus exilipalpis - female

Moved
Moved from Flies.

Tabanus
And your shots are good enough that I can push it through my AR key. It is unfortunately 10 years old. Goes to the difficult T. longus and T. sublongus pair. Jeesh. Tony can comment. Neither of these species is in the guide.

 
There are a couple of
similar speies but I believe this is Hamatabanus exilipalpis. Most publications place this species in Tabanus but in Burger's 1955 Catalog ref. on Tabanidae page he places it in Hamatabanus

 
Hamatabanus
It is included in my keys under the Tabanus key but it is listed as a Hamatabanus. I dropped it with 'eyes sparsely pilose'. I could not see hairs in the photo. The face is a dead ringer however. Separated in key by facial features from H. quaesitus. Thanks.

 
I could not see the hairs
on the eyes, but Pechuman et al commented "The hair on the eyes of the females may easily be overlooked". Longus and sublongus seem to be summer species. Stone described the holotype of exilipalpis from SC, May 25. Tidwell in his Louisiana paper describes sublongus as "eye green with three purple bands".

 
To see or not to see: Hairy Eyeballs
I have added a higher resolution composite view of various areas and angles of the eye. I was unable to find any evidence of hair, either under the microscope or in the images.
I still have the specimen if other important features need to be photographed.
Gayle

 
Oh Oh!
Another candidate for John Burger to look at; I'll send him an e-mail,

 
John Burger
commented to me that this specimen is H. exilipalpis. I have summarized his comments on the species Info page

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