The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
Preferred waters: Best in alkaline streams
In 71 records from GBIF, adults of this genus have mostly been collected during July (30%), August (27%), June (27%), September (7%), and October (6%).
In 100 records from GBIF, this genus has been collected at elevations ranging from 3 to 29016 ft, with an average (median) of 1411 ft.
Current speed: Slow
Substrate: Many, but weeds are best