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 20 records from GBIF, adults of this genus have mostly been collected during April (60%), March (20%), and May (10%).
In 2 records from GBIF, this genus has been collected at elevations of 485 and 3806 ft.