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The pattern notebook · emerger

CDC Transitional Midge

How do you tie a CDC Transitional Midge?

CDC Transitional Midge is a emerger fly pattern for Rainbow Trout, Brown Trout, Cutthroat Trout. Find its 7 materials and 10 tying steps below.

Difficulty
2 of 5
Target species
Rainbow Trout, Brown Trout, Cutthroat Trout
Pattern designer
Traditional (Umpqua pattern)

Added to catalog · Updated

At the vise

Materials

  • Emerger Hook, TMC 2488, sizes 18-24
  • Thread (8/0 or 10/0), Black
  • Abdomen: Tying Thread, built up
  • Rib: Fine Silver Wire
  • Thorax: Peacock Herl or Black Superfine Dubbing
  • Wing/Shuck: CDC Feather, Natural Dun
  • Head Cement

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Tying instructions

  1. Secure the hook in the vise. Start thread behind the eye.

  2. Wrap thread to the bend, building a smooth foundation.

  3. Tie in a length of fine silver wire at the bend for the rib.

  4. Build a smooth, slightly tapered abdomen with thread wraps from the bend to the midpoint.

  5. Wrap the silver wire rib forward in 4-5 even turns over the abdomen. Tie off and trim.

  6. Select a CDC feather. Tie in at the midpoint with the tips extending rearward as a trailing shuck/wing bud.

  7. Trim the CDC tips to about 2/3 the body length.

  8. Dub a small ball of peacock herl or black Superfine dubbing for the thorax.

  9. Wrap the thorax forward to just behind the eye.

  10. Build a tiny thread head. Whip finish and apply head cement to the thread only.