Posted by John Carr on 29-08-2013 05:43
#1
Near the summit of a mountain (4300 meters) in Colorado, USA, August 28, 2013.
Edited by John Carr on 01-09-2013 16:50
Posted by Nikita Vikhrev on 29-08-2013 18:06
#3
I'd check Drymeia latifrons Malloch, 1918. Descibed and known from Rocky Mountains, Colorado
Posted by John Carr on 01-09-2013 16:49
#4
Thank you. I didn't expect a species name. It seems consistent as far as I can see. I could never have run it through a key. I live in a moist, temperate climate near sea level and am unfamiliar with alpine and arctic flies.