The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
This is a widely distributed species in western Montana but never abundant. Note the length of the middle tail, a key to the identification of this genus.
This mayfly was collected from Many streams in Montana on July 5th, 2007 and added to Troutnut.com by Bnewell on June 26th, 2011.