Paul Russell's Hacklestacker cripple/emerger. Tied here as a baetis; change color/size to suit your needs.
hook - Dai Riki 135 #18
thread - Danville 6/0 olive
shuck - Congo Hair brown
abdomen - biot olive
thorax - dubbing brown
post/wing - Congo Hair dun
hackle - dun
Part 1
mash barb; start thread, tie in CH, fold back and wrap halfway down the bend, trim shuck (gap width)
moisten biot, tie in notch-side down; wrap to point above point, tie off/trim
dub thread, dub rear of thorax
double over a hank of CH to create a loop; tie in
insert loop in gallows, tie in hackle at base