The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
Preferred waters: Rivers and lakes or still backwaters
In 50 records from GBIF, adults of this species have mostly been collected during July (48%), June (22%), August (18%), and September (6%).
In 46 records from GBIF, this species has been collected at elevations ranging from 1690 to 19701 ft, with an average (median) of 6493 ft.
Shelter type: Round sand cases