The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
In 189 records from GBIF, adults of this genus have mostly been collected during June (25%), May (19%), July (18%), April (15%), August (12%), and September (6%).
In 140 records from GBIF, this genus has been collected at elevations ranging from 3 to 19029 ft, with an average (median) of 5659 ft.
Diet: Algae, plankton
Shelter type: Tapered wood cases of rectangular cross-section