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Photo#25790
Two toned robber fly - Eudioctria propinqua

Two toned robber fly - Eudioctria propinqua
Bethlehem, Grafton County, New Hampshire, USA
July 18, 2005

Images of this individual: tag all
Two toned robber fly - Eudioctria propinqua Two toned robber fly - Eudioctria propinqua

Moved
Moved from Eudioctria albius. I agree with Paul that this looks more like propinqua.

Moved
Moved from Eudioctria.

The very similar to each other
Eudioctria albius and E. propinqua occur in New Hampshire, each with the same three to four color morphs. This is the orange-faced, orange-winged form. I believe I see a shiny bald spot on each side of the thorax, which makes this albius rather than propinqua.

 
Eudioctria propinqua
I think this may be E. propinqua. The bald spot on albius is much larger and obvious, what appears to be a bald spot here I think is flash reflection. The scutum seems entirely pollinose, leaning towards propinqua. Also, I can see the mesopleuron has pollen extending down the posterior side ruling out albius. And the tibiae should be all black in albius, but are orange in propinqua. The wing color is sexual, not specific. You can see a female of propinqua on the MCZ type database.

Robber two tone
This is similar to one taken in BC across the continent (shot #22326). I get a gestalt that this is another Eudioctria species but I have no proof of this yet. Those antennae eliminate many other groups and that bare scutellum is suggestive. I will check any papers I have from the NE. But we should be able to determine this one.

 
Another angle
Herschel, here's another shot showing the antennae better. Thanks for all your research.