I was traveling on the east side of the Cascades today, where all the rivers are ridiculously high from a combination of snowmelt and rain. It's dangerous to even get in the water. But I found a place to sample a few bugs in a small creek and added a couple stoneflies from my to-do list.
I'm not aware of any way to tell the two species of Doroneuria apart as nymphs, so this one is classified to species based on location alone. Doroneuria baumanni is found in the Cascades and in Washington, and the other species is not known here yet.