The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
In 83 records from GBIF, adults of this genus have mostly been collected during July (34%), June (25%), August (23%), and September (11%).
In 55 records from GBIF, this genus has been collected at elevations ranging from 16 to 10840 ft, with an average (median) of 5092 ft.
Diet: Mostly detritus
Current speed: Slow or still