Hey guys, we have here a tiny (size eighteen), white caddis that sometimes (not usually) produces enormous clouds when emerges. And is very productive to use a simple White EHK in the rivers, on that size when there’s not. Do you have something like that in your home waters?
R.
Nectopsyche are found in the general Yellowstone area in the Spring and Fall. Craig Matthews has developed a number of patterns for this hatch which is most prolific on the Firehole River. They are sometimes called the “White Miller” Caddis. They are tied in sizes #14 - #16:
https://www.blueribbonflies.com/fluttering-white-miller-16.html


PT/TB
Thanks Planettrout!