The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
In 95 records from GBIF, adults of this species have mostly been collected during August (28%), June (26%), July (24%), and September (15%).
In 36 records from GBIF, this species has been collected at elevations ranging from 16 to 9456 ft, with an average (median) of 1401 ft.
Current speed: Still or slow
Shelter type: Case of flat little pieces of wood or bark