The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
In 1967 records from GBIF, adults of this genus have mostly been collected during July (26%), June (24%), May (17%), August (15%), September (7%), and April (5%).
In 1099 records from GBIF, this genus has been collected at elevations ranging from -30 to 38927 ft, with an average (median) of 1047 ft.
Shelter type: Thick tubes of stone, sand, bark, or wood