Could be anything - caddis emerger, stonefly, spruce moth, etc. depending on size, color and how many cups of coffee consumed (2 here). Original was tied with hen hackle legs, pheasant aftershaft used here just to see; your choice. Similar to Harry Mason’s Snowshoe Caddis http://www.flyanglersonline.com/flytying/fotw2/fotw20090720.php
hook - Dai Riki 280 #16
thread - MFC 8/0 sand
underbody - opalescent mylar medium
abdomen - midge tubing tan
underwing - Midge Krystal Flash pearl
wing - snowshoe rabbit foot cream
legs - aftershaft feather (in split-thread)
head - snowshoe rabbit cream (in split-thread)
Part 1
mash barb, start thread at 2/3 mark; tie in tubing, wrap back to bend and return thread to tie-in
tie in tinsel, wrap to bend and back; tie off/trim
pull tubing tight and wrap abdomen; tie off/trim
tie in KF; fold back
clip a clump of snowshoe rabbit, even tips, measure (tips to bend); tie in/trim
since this is a smaller fly, a standard pheasant aftershaft would be too large (and I was too lazy to go looking for a smaller feather on a quail or woodcock skin) so I just used one side inserted in the clip
do the clip/split thread thing for the snowshoe underfur (or dub it if you prefer); trim exposed ends to the desired length or leave as-is for a really buggy effect (may require some trimming afterward)
After I inserted the underfur into he clip, I trimmed the exposed ends (fixed that in the description). Harry left his “as-is” and then trimmed the head top-and-bottom afterwards, kinda Muddler-style, very buggy. I think I’ll try some his way, too.