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.
Preferred waters: Stillwaters or streams of any size
In 121 records from GBIF, adults of this species have mostly been collected during August (26%), September (25%), July (22%), June (17%), and October (7%).
In 78 records from GBIF, this species has been collected at elevations ranging from 3 to 8005 ft, with an average (median) of 789 ft.