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Photo#1116170
Holcocephala but which one? - Holcocephala calva

Holcocephala but which one? - Holcocephala calva
North Bethesda, Montgomery County, Maryland, USA
July 24, 2015
I suspect this robber fly is Holcocephala fusca based on the Eric Fisher’s comment about the "more elongate, parallel-sided flagellomere 1” and the fact that the hind tibia & basitarsis aren’t really much wider than the hind femur (as opposed to their being “35%” wider in H. abdominalis. I also don’t think this fly is dark or elongate enough to be H. calva.

I’d really appreciate someone with more experience with robber flies chiming in on this ID. Thanks in advance for the help

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Holcocephala but which one? - Holcocephala calva Holcocephala but which one? - Holcocephala calva Holcocephala but which one? - Holcocephala calva Holcocephala but which one? - Holcocephala calva

Moved
Moved from Holcocephala.

Moved to genus
Moved from Robber Flies.
I'm leaving this at genus for now given Herschel Raney's "most likely" ID as H. calva. Herschel or one of the other editors can decide whether it should move to species level.

 
I agree with H. calva.
I think it's calva also.

 
thanks
what features did you use to decide it was calva so I'll recognize it in the future?

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