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 30 records from GBIF, adults of this genus have mostly been collected during June (53%), July (23%), May (13%), and August (7%).
In 444 records from GBIF, this genus has been collected at elevations ranging from -164 to 4921 ft, with an average (median) of 1332 ft.