The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
In 1217 records from GBIF, adults of this family have mostly been collected during June (24%), July (21%), May (18%), August (17%), September (7%), and April (6%).
In 610 records from GBIF, this family has been collected at elevations ranging from 10 to 23622 ft, with an average (median) of 3652 ft.
To further identify a specimen of Rhyacophilidae to the genus level, use the Key to Genera of Rhyacophilidae Adults.