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.
Wiflyfisher on Jul 23, 2007July 23rd, 2007, 3:06 pm EDT
The caddisfly in the photo produced a heavy hatch and egg laying on the Henry's Fork River in the riffled water areas. It also appeared to put sticky yellow blobs of eggs all over our waders too!
John, this isn't a hydroptilid; they are very small (under 5mm) and very hairy. It's a hydropsychid, but maybe one of the experts will have a better idea about species.