An X-caddis with augmentation (if you look closely beneath the collar, you can see the scar on the underside). Tied here in somber shades of tan; an abdomen of Krystal Flash or opalescent mylar might be good for pounding them up.
hook - Dai Riki 320 #16
thread - UTC 70 tan
shuck - Congo Hair amber
abdomen - tying thread
underwing - CDC tan
collar/pfd - caribou hair
wing - deer hair
Part 1
Mash down barb, attach thread
tie in CH, fold, wrap back to point above barb and back to tie-in; trim shuck
measure CDC (tips half shuck length); tie in
clean a clump of caribou, trim out tips; tie in and let it spin
trim collar