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Robber Fly - Eudioctria nitida

Robber Fly - Eudioctria nitida
Elkton, Douglas County, Oregon, USA
June 27, 2008
Size: approx. 1/2 inch
Only sure it's a Robber Fly. Looked like some Dioctria, but couldn't find matching leg color patterns. Any ID more conclusive would be greatly appreciated.

Moved from Eudioctria.

The leg pattern seems to fit
Eudioctria nitida.

Moved from Robber Flies.

Eudioctria. Three species there.

Thank you.
Thank you. Are they easy to tell apart?

I doubt it
But I have no key to the western species in that genus.

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