The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
Stream photos
In 20 records from GBIF, adults of this species have been collected during August (35%), September (30%), July (20%), and October (15%).
In 16 records from GBIF, this species has been collected at elevations ranging from 72 to 2070 ft, with an average (median) of 919 ft.