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Photo#954170
Lots of these flies on the dead wood along the trail - Lasiopogon fumipennis - male - female

Lots of these flies on the dead wood along the trail - Lasiopogon fumipennis - Male Female
Olive Lake, Grant County, Oregon, USA
June 19, 2014

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Lots of these flies on the dead wood along the trail - Lasiopogon fumipennis - male - female Lots of these flies on the dead wood along the trail - Lasiopogon fumipennis - male - female

Moved
Moved from Robber Flies.

Lasiopogon
Nice mating pair of Lasiopogon, probably L. fumipennis based on the habitat (they sure love perching on fallen logs in the mountains out west) and coloration (e.g., medial stripe down the scutum, solid light/dark stripes on the abdominal segments). Usually their haltere knob has a bigger dark spot, but I think this one has enough of a spot to count.

Moved
Moved from ID Request.

Look like
robber flies to me but I'm no expert... as you both are with Lepidoptera!

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