The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
Stream photos
In 17 records from GBIF, adults of this genus have been collected during June (59%), July (29%), and May (12%).
In 10 records from GBIF, this genus has been collected at elevations ranging from 69 to 2559 ft, with an average (median) of 1743 ft.