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.
In 20 records from GBIF, adults of this species have been collected during June (45%), May (20%), July (15%), April (10%), and August (10%).
In 3 records from GBIF, this species has been collected at elevations of 3, 20, and 26 ft.
Most physical descriptions on Troutnut are direct or slightly edited quotes from the original scientific sources describing or updating the species, although there may be errors in copying them to this website. Such descriptions aren't always definitive, because species often turn out to be more variable than the original describers observed. In some cases, only a single specimen was described! However, they are useful starting points.
Abdominal tergites of male imago deep brown, sternites paler brown; longitudinal veins brown.
Head and thorax deep brown; lateral flange-like edge of mesonotum paler; thoracic sternum deep brown. Legs dull amber, the fore legs deeper in color than the second and third pairs. Wings hyaline; longitudinal veins brown; cross veins pale, almost invisible except in the anal region. Abdominal tergites deep brown: sternites paler brown. Forceps dull dirty amber colored; tails pale brownish, the joinings darker.