The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
Stream photos
In 91 records from GBIF, adults of this species have mostly been collected during June (27%), August (26%), May (20%), July (20%), and September (5%).
In 16 records from GBIF, this species has been collected at elevations ranging from 10 to 10499 ft, with an average (median) of 2133 ft.