Abdomen/gills Olive and brown ostrich herl (2 olive + 1 brown, twisted)
Shellback & wing case Olive Scud Back / thin skin (1 strip)
Legs Dyed-olive partridge (Few fibers per side)
Thorax Peacock synthetic dubbing (Small pinch)
How to tie it
Slide a dark-olive bead to the eye, mount the hook, and lay 8-10 wraps of lead-free wire behind it to shove the bead tight; start thread and jam the wire in place.
At the bend, split a partridge tip into two fiber clumps and bind one down each side so the tails flare a full hook gap apart. A real drake carries three, but two reads plenty buggy.
Bind in the copper wire and a strip of olive Scud Back at the tail, then twist two olive and one brown ostrich herl onto the thread and wrap forward to the 60% mark for a fuzzy, gilled abdomen.
Pull the Scud Back over the top as a glossy shellback and counter-wrap the copper rib forward in 5-6 open turns, segmenting the body and pinning the herl gills down; snip the excess.
Tie in a second Scud Back strip for the wing case, then dub a fat peacock-synthetic thorax to the 85% mark.
Sweep a few partridge fibers along each side as legs, reaching to the hook point.
Draw the wing case forward over the thorax, bind behind the bead, snip, build a small thread collar and whip finish.