The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
I found this dun floating on the surface at night while I mucked around in the shallows collecting nymphs. I suspect he may have been prompted to emerge by the stress of my disturbance.
This mayfly was collected from the Namekagon River in Wisconsin on May 22nd, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.