The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
This specimen was the first record from Montana and the first record from the mountain west except Alberta where it was first described. It was found in temporary ponds.The nymph has double gills on all segments. The abdominal stripe is an important feature for identification
This mayfly was collected from Temporary ponds- Glacier Nat. Park in Alaska on July 2nd, 2007 and added to Troutnut.com by Bnewell on June 26th, 2011.