There are many, many different versions of this crustacean that have evolved over the years.  The version that is presented most resembles Oliver Edwards - Fly Tying Masters Class of 1984 - pattern the Edwards Shrimp.


Hook:Dai-Riki 135, Tiemco 2457 or equivalent, size 12-20 - Preferred #16
Thread:8/0 Olive or match body color
Tail/Antenna:Pheasant tail fiber tips
Rib:6X mono
Shellback:1/8 inch clear plastic material or Thin Skin - Fly Speck Black/Clear
Body:Sow-Scud Dubbing Watery-Olive #290

Tying Instructions

  1. Fasten a hook in the vise and attach thread.
  2. Tie in tail (about 4-5 fibers) and bring the thread to one eye length behind the eye.
  3. Tie on the front antenna (about 4-5 fibers.
  4. Tie on the mono to be used for ribbing.
  5. Tie on the shell back.
  6. Dub body leaving room for shellback, mono, tie-down and head.
  7. Tie off dubbing.
  8. Pull over shellback and tie down. Do not trim off the shellback, yet.
  9. Bring ribbing forward and trim. Trim the shellback at this time.
  10. Whip finish and cement the head, if desired.


These crustaceans match the overall coloration of their environment.  If the water they swim in is clear, they will exhibit a pale gray coloration; if the water is has an olive brown cast to it, the bug will show that coloration.  Trout can be caught on pink scuds, which imitate dead scuds.  The most common colors are gray, grayish olive, olive brown and pink in sizes 12 to 18.

Fishing Techniques

When moving through water, scuds move very slowly.  Use a dead-drift presentation in a stream; a bit faster in lakes, such as a slow hand-twist retrieve.  This fly is quick and easy to tie so don't hesitate to work it around sunken brush surrounding your favorite trout lake.  The scud is best fished using a shot and indicator or fished as the dropper on a two fly rig.