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 Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.
Litobrancha on Sep 23, 2006September 23rd, 2006, 10:51 am EDT
this is a limnephilid larvae. check out this website for trichoptera larval family keys. don't think they have limnephilidae but you can get genera for most other families.