CDC Emerger

CDC Emerger

Emerger
Emerger
Intermediate
Rainbow Trout
Brown Trout
Brook Trout
Cutthroat Trout
Grayling
Hook: 12-20

The CDC Emerger is a versatile pattern that imitates mayflies and midges transitioning from nymph to adult in the surface film. CDC (Cul de Canard) feathers from a duck's preen gland provide extraordinary natural buoyancy, keeping the fly suspended perfectly in the film where trout feed on vulnerable emergers. Adaptable to match any hatch by changing body color and CDC shade.

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Materials

Hook

Tiemco 2487 or dry fly hook, sizes 12-20

Thread

Olive, grey, or black 8/0 or 70 Denier

Tail (optional)

Wood duck or mallard flank fibers

Body

Hare's ear or olive Superfine dubbing

Rib (optional)

Fine gold or copper wire

Wing

Natural CDC feathers (gray, dun, or olive to match hatch)

Thorax

Hare's ear dubbing, olive dubbing, or peacock herl

Hackle (optional)

Grizzly or brown dry fly hackle

How to Tie the CDC Emerger

  1. 1

    Step 1

    Place the hook in the vise and attach thread behind the eye, wrapping back to the bend.

  2. 2

    Step 2

    Optionally tie in a few fibers of wood duck or mallard flank at the bend as a tail, about hook-shank length.

  3. 3

    Step 3

    Optionally tie in fine wire at the tail for ribbing.

  4. 4

    Step 4

    Dub the thread with hare's ear or olive dubbing and wrap a slender, slightly tapered body up to about two-thirds of the shank.

  5. 5

    Step 5

    If ribbing, spiral wrap the wire forward for segmentation, secure and trim.

  6. 6

    Step 6

    Select 1-2 CDC feathers, align the tips, and tie in on top of the hook so they extend over the bend to about two-thirds of the body length. The wing should stand upright or sweep slightly back.

    Use the highest quality CDC for best buoyancy. Keep the fly sparse for soft or slow-moving water.

  7. 7

    Step 7

    Dub a small amount of hare's ear or olive dubbing around the base of the CDC wing for a slightly bulkier thorax.

  8. 8

    Step 8

    Optionally add 1-2 turns of grizzly or brown hackle behind the eye.

  9. 9

    Step 9

    Whip finish behind the hook eye and optionally apply a small drop of head cement.

Watch Tying Tutorial

https://www.youtube.com/watch?v=k4VrWRIMhPY

Credit: Traditional / Various

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