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.
This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
Kschaefer3 on Jun 25, 2014June 25th, 2014, 6:28 am EDT
If you clip the hackle on the bottom side, it should ride lower in the water for you. You could also try to not use floatant (assuming you do). Then it will take on a bit more water and ride lower as well.