Mercury Black Beauty

Mercury Black Beauty

Nymph
Midge
Beginner
Rainbow Trout
Brown Trout
Cutthroat Trout
Hook: 18-24

Pat Dorsey's Mercury variant of the classic Black Beauty midge, featuring a small clear glass bead that imitates the natural air bubble of an emerging midge pupa. This pattern is a must-have for winter tailwater fishing and any time midges are the primary food source. Its slim profile and subtle flash make it deadly on selective, pressured trout.

🪶 Ready to tie this?

This pattern needs 6 materials. Sign up free to check which ones you already own.

Check My Materials — Free

Materials

Hook

TMC 2487 or Daiichi 1140, sizes 18-24

Bead

Extra small clear glass midge bead

Thread

Black UTC 70 Denier or 8/0

Rib

Extra fine copper wire

Body

Black tying thread (same as above)

Thorax

Black Superfine or UV2 Fine & Dry dubbing

How to Tie the Mercury Black Beauty

  1. 1

    Step 1

    Slide the clear glass bead onto the hook, small end first, and mount the hook in the vise.

  2. 2

    Step 2

    Start black thread behind the bead and wrap a smooth base back to the start of the bend.

  3. 3

    Step 3

    Tie in a length of fine copper wire at the rear edge of the bead, wrapping it along the shank toward the bend, keeping it to the near side.

  4. 4

    Step 4

    Continue wrapping thread rearward to about a third down the bend (on curved hooks), forming a smooth, slightly tapered body.

  5. 5

    Step 5

    Bring thread back up to just behind the bead, creating an even, slim thread body.

  6. 6

    Step 6

    Spiral the copper wire rib forward in 5-7 even turns toward the bead. Secure with thread wraps and trim or break off excess.

    Even spacing on the wire creates a realistic segmented look.

  7. 7

    Step 7

    Dub a very small amount of black Superfine dubbing onto the thread and build a subtle, thin thorax immediately behind the bead.

  8. 8

    Step 8

    Whip finish behind the bead. Optionally apply a thin coat of UV resin over the body for extra durability and sheen.

Watch Tying Tutorial

https://www.youtube.com/watch?v=qehBZ96XXMk

Credit: Pat Dorsey

More patterns like this

Other patterns using these materials

Track Your Fly Tying Materials

See which patterns you can tie with materials you already own. Build your inventory, discover new patterns, and never buy duplicates.

Get Started — It's Free