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.
Time of year : Late June through late July
In 67 records from GBIF, adults of this species have mostly been collected during June (33%), July (24%), May (21%), August (9%), and April (6%).
In 10 records from GBIF, this species has been collected at elevations ranging from 600 to 3802 ft, with an average (median) of 1148 ft.
Time of day: Dusk