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Photo#7317
Syrphid fly, maybe? - Exoprosopa fasciata

Syrphid fly, maybe? - Exoprosopa fasciata
Gainesville, Florida, USA
September 21, 2004
I hope the wing veination and coloring will make this an easy ID for someone (Paul? Eric?). Shown on Bidens. I think it's a syrphid, but flies are definitely not my forte.

Bombyliid ID
The fly is Exoprosopa fasciata, named for the white band across the abdomen. It is one of the most common Exoprosopa in the East.

 
Thanks, Andrew -
I see from your bio that this is your specialty so I will update the guide accordingly. Always nice to have a truly expert ID!

See Giff Beaton's images--Exoprosopa , or Villa species?
Look at Giff Beaton's images, :
Bee flies, scroll down to Exoprosopa sp., 19 Sep 2003, River Bend WMA, Laurens County, GA, JPEG of Exoprosopa.
Also look at Villa on that page. Exoprosopa looks closer, perhaps?

Patrick Coin
Durham, North Carolina

 
OK, now I'm really confused,
because I compared GB's two images side by side and couldn't discern any obvious difference between them! Wing veination is clearer in one than the other, but they both seem to match mine.

I think you're absolutely on the right track, though. I didn't know GB was good for bee flies as well as robbers, so I'm happy to add that to my references.

 
Bee fly confusion...
I had noticed the similarity on those images too. Why don't you e-mail Giff and ask him about it, and also about your critter? I've corresponded with him before on different id's--he's very knowledgeable, and has Manual of Nearctic Diptera at hand.
Looks like the two genera, at least certain species, can look very similar. See Insects of Cedar Creek: Exoprosopa fascipennis, Villa, esp. look at V. fulviana.
Brimley, in Insects of North Carolina, lists several species of both genera for that state, so they do both occur in the southeast.

Patrick Coin
Durham, North Carolina

 
Well, some interesting e-mail correspondence later,
I have a tentative ID from Giff Beaton as Exoprosopa, based on a little cross-vein in the wing (between R4 and R5, for those to whom that means something,) which Villa does not have. So I will move it to that page pending further clarification, perhaps.

Bombyliid
It is a bombyliid fly. With the literature I have at hand here I cannot identify it but when you roam though the pages here you may find something to lead you further.

Paul

http://www.diptera.info