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Photo#329623
Robber - Neomochtherus latipennis

Robber - Neomochtherus latipennis
Powell Gardens, near Kansas City, Johnson County, Missouri, USA
September 6, 2009
Any ideas on this robber? Thanks.

Moved

Neomochtherus
Paul is right; Machimus/Tolmerus flies have longer epandria that don't curve around like this. This is a Neomochtherus, probably N. latipennis. The genus is distinctive for its round and thick epandria, no presutral dorsocentral bristles, flat face with minimal mystax, short proboscis, and light colored legs.

 
Compare
Here's a good specimen for comparison:

Moved
Moved from Machimus sadyates.

Well, on second thought (to be honest,
you can only go so far keying insects from a photograph), the character for the tibia of "apical 1/4 (or less) blackish" sends me to M. autumnalis, where I will now move this.

 
Machimus sp.
I respectfully disagree that this is M. autumnalis. It should show entirely black femora and a more narrow epandrium with a pronounced downward bent at the tip to be that species. I'm not sure what this is though. The leg color does more match sadyates, but I don't think its that species either. I notice prominent white hairs on the right front tibia (not visible on the left, focus?)

Moved
Moved from Machimus.

All black femora and
largely brown tibiae make this Machimus sadyates.

Moved
Moved from Robber Flies.

Moved
Moved from ID Request.

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