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 is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
DayTripper on Jun 7, 2013June 7th, 2013, 7:36 pm EDT
I am pretty sure this is a March Brown female but wanted to post here to confirm. I caught one with the egg sac hanging out a few minutes before, and then pulled in two mating pairs where the female had this red belly full of eggs. Pretty excited about it! Thanks!