ewab

Or perhaps investigate: CADDISFLIES a guide to Eastern Spiecies by Thomas Ames Jr.

Thanks for the fly, Old Hat. It reminds me of another; the white miller Wet fly version of the 19 Century; also an eloquent simple fly, that did the job.

Because I see no weight in the material list (perhaps you did incl. a Bead), I expect that you may fish this Nymph as as an emerger. Why this choice of fly hook instead of a Klinkhamer hook smaller in size? Often, out West I have seen the black stone fly (many at a time) crawl out of water and up onto snow melt in the spring.