Stonefly Genus Suwallia (Sallflies)

I collected a few of these throughout the afternoon. The positive ID on the adults allowed me to also put a species ID on the nymphs.

This specimen keys out to Suwallia, for which I did not find any nymph species keys. However, I'm placing it in Suwallia pallidula because I caught a few adults in the same spot that closely resembled the abundant nymphs and keyed them out to species. Features I noted under the microscope when keying this specimen to genus included apical hairs of cercal segments that were directed at posterior angles, and the longest apical hairs of distal segments were shorter than their following segment.