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Wasp or mimic? - Physoconops

Wasp or mimic? - Physoconops
Archbold Biological Station - Lake Placid, Highlands County, Florida, USA
August 9, 2009
Size: 10mm roughly
This is the only shot I was able to get and it was from quite a distance away. When I took it I thought this was a wasp but, looking at it now, I am thinking a wasp mimicking fly?

Moved from Physoconops.

Moved from Physoconops or Physocephala.

Location of cross vein r-m relative to discal cell (and shape of discal cell) indicate this is Physoconops (cf. (1) and (2)).

Also, the hind femur looks reltatively uniform in width, and I *think* I can barely make out a slight ocellar bulge on vertex. (Physocephala have femora irregularly thickened at base, and no ocelli.)

Moved from Thick-headed Flies.

Moved from Flies.

Moved from ID Request. Thanks Ron and Chris.

how about Conopidae?
The antennae are remarkebly long, almost too long for Syrphidae. There are some images in Conopinae that look similar to your image, but I am not at all a fly expert so it is probably best to wait for an expert opinion as Ron suggested earlier.

Chris is right
I always forgot those flies. In a quick check, comments on one post noted the yellow halteres being a key characteristic.

Yes, it's a fly.
Note the small yellowish pads (halteres) that act as stabilizers, replacing the second pair of wings found on other insects. I'm pretty sure this is a syrphid, but I don't know which. Suggestion: Move your post to Flies (Diptera) for expert attention.

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