This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
Sayfu on Oct 5, 2012October 5th, 2012, 5:54 am EDT
My approach would be to tie a small soft hackle, metal bead headed, the abdomen ribbed with small copper wire over a pale green acrylic yarn I use. The rest of the yarn strand gets combed out, and laid back over the body. Then a peacock herl thorax, and a soft hackle "APPLIED" on a #16 caddis/pupa hook that is short shank, and a wider gape for better hooking/holding. I want my hackle to extend back beyond the hook bend. I use all kinds of soft hackle game bird feathers for hackle...Sage Grouse, and Sharptail Grouse lately, but Ruff Grouse lately as well, Hungarian Partridge of course, and duck feathers. There are some great soft hackle feathers that come off ducks.That yarn I get in the craft shop, and it is J. & P. Coats yarn, 4 strand small that you can separate, and use as many strands as needed. I have it in a honey gold, green, and yellow. Great stuff, makes tying easy. I either go for some shine with a copper metal bead, or go black. I watched Lawson tie a similar fly for a caddis emerger this Spring, and he prefers a black bead, but he fishes Spring Creek waters while I am a tailwater guy for the most part.