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.
Notice the leg markings on this specimen vs. your specimen of the female distinctus and the male specimen of verticus on the other thread. I'm not aware of any description pointing out the significance of this but it's interesting.
Foreleg pale with ferruginous tip to femur; joint between tibia and tarsus piceous or purplish and also the joints between tarsal segments.