ID notes from the microscope: The occiput (Occiput: The back of the head.) has a sinuate, irregularly spaced spinule row.
This stonefly was collected from the East Fork Big Lost River on August 3rd, 2020 and added to Troutnut.com on August 19th, 2020.
The nymph was out of the water in this picture, because it wouldn't stop wriggling and flip over.
I had to wait until after this one died in the preservative (alcohol) before I could get a wetted ventral view, because it was too squirmy otherwise.
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