Neat little fly. Craft foam would make a more durable wing pad than the deer hair (see Kelly Glissmeyer's great Halfback Foam Emerger ) but this was developed before that stuff was readily available. Tied here in PMD colors; adjust to suit your hatch.

hook - Dai Riki 320 #18
thread - UTC 70 hopper yellow
rib - small copper wire
abdomen - pheasant tail
shuck/back - Congo Hair brown
wing case - deer hair
thorax/head - Superfine dubbing PMD

Part 1

mash down barb, attach thread

tie in wire and wrap back to point above barb

tie in a few pheasant tail fibers

wrap forward and tie off at 60% mark

tie in Congo Hair

pull CH down on top of hook, capture with wire rib; continue ribbing forward, helicopter end and tie off

clean a small clump of deer hair

tie in by butt ends, smooth with thread