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Photo#681285
Black March Fly with Brown Legs - Bibio - male

Black March Fly with Brown Legs - Bibio - Male
Southwest of Twin Lakes, Chaffee County, Colorado, USA
July 27, 2012
It was at about 12,000 feet elevation.
Bibio xanthopus?

Can't tell
I can't tell species from this shot alone. One character used to distinguish species is the length of the inner spur of the fore tibia. Only the outer spur is visible here.

There are a few species found up in the mountains of the West that aren't found in more populated areas.

Moved
Moved from March Flies.

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