Ultra wire, extra small Copper or silver ultra wire extra small (One length)
Danville acetate floss Red floss (Half to a third of a strand)
Acetate floss Black floss (6-8 strands only)
Acetone (To fuse the floss)
Superglue Clear head cement (Full coat)
How to tie it
Set a size 10 scud hook in the vise with the point covered. Acetate floss will shred to pieces on anything sharp, and that is the single biggest reason people give up on this old pattern.
Tie in Antron for the gills with a loose first wrap, centre it, counter-spin the bobbin to flatten the thread so it does not bulk, then a few wraps in front to lift them. Antron is thicker than Uni-Stretch, so you may need to pull a couple of strands out to get the bead over.
Whip finish, slide the bead on, and tie in extra small copper wire behind the bead on the near side. Then tie in red acetate floss, cut down to half or even a third of a strand. Full strands will bulk the fly out badly.
Bind the red floss down to the bend with thread and wrap it forward as the underbody. The Producer is red at the butt fading into black. That transition is meant to show a larva turning into a pupa, with the haemoglobin still glowing at the tail.
Switch to black acetate floss and use as little as you dare, six or eight strands. Spread the strands out as you wrap down the shank so the red shows through blotchy underneath, then tighten your turns as you come back up so the front is solidly black.
Rib the wire forward for about seven segments, whip finish, and trim the gills. Cut a fresh, sharp edge on the floss every time you tie a piece in. A frayed end is what starts the shredding.
Brush the whole body with acetone. It darkens the red, fuses the floss strands into one blended body and gives the blotchy bleed the fly is famous for. Then coat with superglue. You can apply superglue while the acetone is still wet, but if you want UV resin you must let the acetone dry a full day or the resin goes waxy underneath.