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Written tying guide

Mercer-inspired Poxyback dressing

6 numbered steps and a complete materials list for this dressing.

Read the tying steps
Mayfly nymph / Pattern notes

Green Drake Nymph

A large mayfly nymph with a tapered dubbed body, soft gills and a dark protective back.

The index displays two Green Drake Nymph images. This page gives one fully specified large mayfly recipe based on Mike Mercer’s published Poxyback dressing; the source index does not specify its pictured recipe.

At the vise
Advanced
Common sizes
#8–12
From hook to fly

At the vise.

6 steps

Work through the numbered steps in order, using the materials list and written proportions as your guide.

  1. Mount bead and tail

    Slide the bead onto the hook, start olive thread behind it, and tie three pheasant-tail fibers at the bend as a short tail.

  2. Set the back materials

    Secure copper wire, two turkey strips and two soft aftershaft feathers at the tail base, leaving working lengths behind the hook.

  3. Dub and cover the abdomen

    Dub a tapered body to about two-thirds of the shank. Pull aftershaft forward as gills, lay turkey strips over it, and rib the abdomen with open copper turns.

  4. Prepare the wingcase

    Fold the turkey strips back out of the way and build a broad olive-brown thorax with dubbing.

  5. Add legs and wingcase

    Attach sparse grouse or hen fibers on both sides, then draw each turkey strip forward over the thorax and tie it off behind the bead.

  6. Finish the back

    Whip finish, keep the eye open, and add a thin UV coating only to the turkey wingcase.

Beyond the bench

On the water.

Drift it near the streambed before green drake activity and experiment with a shallower presentation when nymphs begin moving upward.

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Recipe references

Original written instructions adapted from the sources below. Materials and methods may vary between versions.

For the same fly box.

All Purpose NymphMayfly nymph · #12Biot NymphMayfly nymph · #12–16Burk’s HexMayfly nymph · #4–8