Hook 3X-heavy nymph hook (here, a Fulling Mill 5115, 10
Thread Dark brown, or 70 Denier 8/0
Materials
Rib Copper brown Ultra Wire, small
Back Brown Antron yarn
Abdomen Amber Sow & Scud dubbing
Wingcase Brown Antron yarn
Thorax Pheasant Tail Ice Dub
How to tie it
Set the 3X-heavy nymph hook with the eye tipped up a little so the thread cannot spin off it, and start dark brown thread a full eye length behind the back edge of the eye; snip the tag close.
Bind one end of the small copper brown Ultra Wire to the top of the shank, letting the thread push the wire to the far side as you wrap rearward well down into the bend, then return the thread to the initial tie-in point.
Bind brown Antron yarn down the top of the shank the same way, again going well into the bend — this darkens the rear top of the fly the way many of the naturals are colored — then bring the thread forward to the tie-in point.
Spin an ample noodle of amber Sow & Scud dubbing, start the first wrap at the rear tie-down of the wire and yarn, twist the noodle clockwise into a thin fuzzy rope and take touching forward wraps to build a robust, segmented abdomen ending at the initial tie-in point.
Pull the Antron yarn forward over the top of the abdomen and lock it with two or three tight thread wraps, then a couple around just the shank and a couple more over the material; grip the excess with hackle pliers and snip it off close, keeping the offcut.
Spiral the wire forward over the abdomen in five or six open turns to segment the body and toughen it, anchor it with the thread and helicopter it off close.
Rough out the dubbing on both sides of the fly with a dubbing brush — just enough to make it look a little fuzzy.
Lay the midpoint of the saved Antron offcut on top of the shank, take a couple of wraps to secure it, then fold the forward-pointing half back and bind it down to double the material for the wing case.
Spin a slender noodle of Pheasant Tail Ice Dub and wrap an abbreviated thorax, then pull the wing case over the top and anchor it behind the eye with the same sequence — two or three wraps over the material, two around just the shank, two more over the material — and snip the excess close.
Strip most of the lower fibers from a burnt-orange Brahma hen soft hackle so the lowest fibers stand a full hook in length, hold it shiny side toward you, brace your scissors on the back edge of the eye and cut the tip into a small triangular anchor, then bind that anchor to the top of the shank.
Fold the fibers rearward over your fingertips and wrap a fairly sparse collar, anchor the stem and snip it close, then preen all the fibers down and take thread wraps to pin them back and down beard style — that is what sells the pattern as a pupa.
Do a four or five turn back-to-front whip finish, seat the knot, and apply an ample drop or two of head cement to both the wing case and the head wraps.