UV2 fine dubbing (butt and head) Black dubbing (Small pinch at the rear, slightly more at the head)
Sparkle dubbing (body) Maroon/purple sparkle dubbing (Loosely loaded into the wire loop)
Ultra Wire (dubbing wire) Red ice dub (Fine, one length)
How to tie it
Slide the 7/64 in gold bead onto a size 14 swimming nymph hook, start black 6/0 thread behind it and wind to the rear of the shank.
Dub a small amount of fine black UV2 dubbing onto the thread and wrap a short butt at the rear, then pick it out so it flares into a soft butt/tail.
Tie in fine red Ultra Wire on the shank and take it back to the butt.
Form a wire dubbing brush: fold the red wire into a loop long enough to cover the body, lay maroon/purple sparkle dubbing loosely between the two wire legs (sparse, so it can splay) and twist the wire to spin the brush.
Wrap the wire dubbing brush forward, letting the red wire show through as a rib, and stop where the swimming hook kicks up toward the eye, leaving room behind the bead. Tie off and trim.
Dub fine black UV2 dubbing onto the thread, a little heavier than the butt, and wrap a head right behind the bead. Whip finish.
Pick the entire body out with a dubbing pick so the black butt, maroon body and black head blend into one another and the fly takes on a leechy, mobile profile.