CDC Biot Caddis

CDC Biot Caddis

Dry Fly
Caddis Imitation
Intermediate
Rainbow Trout
Brown Trout
Cutthroat Trout
Hook: 12

Pete Steen ties this slim adult caddis for Fly Fish Food, pairing a segmented turkey biot body with a full wing of stacked CDC. The biot gives a ribbed abdomen with very little bulk, while the CDC holds the fly in the surface and forms a tent shape over the body. A ginger collar in front of the wing suggests legs and adds a little more float. Use a light wire dry fly hook so it rides well, and fish it dead drift during a caddis hatch. Tied here on a size 12 hook.

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Materials

Hook

Firehole Sticks 419 dry fly hook, size 12

12

Thread

UTC Ultrathread 70 Denier, wood duck

Wood Duck · 70 denier

Body

Nature's Spirit Stripped Barred Wild Turkey Biots, brown olive

Brown Olive

Other

Fly Tyer's Z-Ment, to set the biot body

Thorax

Super Fine Dry Fly Dubbing, cinnamon caddis

Cinnamon Caddis

Wing

Nature's Spirit CDC Feathers, brown

Brown

Hackle

Soft ginger feather for the collar

How to Tie the CDC Biot Caddis

  1. 1

    Step 1

    Start the thread behind the eye and lay a smooth base back to the start of the bend.

  2. 2

    Step 2

    Tie in a turkey biot by its tip at the bend so the rest of it extends past the hook. Bring the thread forward to the front of the body area.

  3. 3

    Step 3

    Coat the thread base with a thin film of Z-Ment to help the body hold together.

  4. 4

    Step 4

    Clip hackle pliers to the butt of the biot and wrap it forward in close turns, letting the ridge of the biot form the segments.

  5. 5

    Step 5

    Tie off the biot at the front of the body and trim the excess.

  6. 6

    Step 6

    Dub the thread lightly with the cinnamon caddis dubbing and build a small thorax. Leave room behind the eye for the wing and collar.

  7. 7

    Step 7

    Stack several CDC feathers with their tips even. Tie them in at the front of the thorax with the tips running back past the bend.

  8. 8

    Step 8

    Trim the CDC butts and cover the cut ends with thread.

  9. 9

    Step 9

    Tie in the soft ginger feather directly in front of the wing and trim its tip.

  10. 10

    Step 10

    Wrap the feather forward as a collar, stopping short of the eye. Tie off the stem with a few thread wraps.

  11. 11

    Step 11

    Whip finish a small thread head, then clip the feather stem and the thread.

Watch Tying Tutorial

https://www.youtube.com/watch?v=m2wHkmeE44o

Credit: Pete Steen / Fly Fish Food

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