Bare Woods Mahogany Dun

by @dekasso

Mahogany Dun · Dry fly

Grey wings over a spring woodland run

A slim Mahogany Dun dry fly on a size 16 hook, with long split dun tails, for trout rising to mahogany mayflies.

A slim Mahogany Dun dry fly with a sparse grey hackle and two long tails that fork wide at the tips. The body is wrapped in smooth mahogany thread, set off by dun Microfibbetts and a rust brown head.

Pattern
Mahogany Dun
Imitates
Mahogany dun (Paraleptophlebia)
When
typically spring and early fall afternoons
Hook
size 16
Tippet
5Xrule of three
  • Size 16 dry fly hook
  • Slim mahogany thread body
  • Long split dun Microfibbetts tails
  • Sparse grey dun rooster hackle
  • Matches mahogany dun hatches

On the water

A dry fly riding the surface of a trout river

A thin mahogany body, segmented and glossy, sits under a fan of grey dun hackle. Two long tails stretch out behind and split wide at the ends. Behind it, a clear stream slides past bare trees and mossy stones.

Fish it on the soft glides of small wooded creeks when mahogany duns drift off the riffles. Drop it a few feet above a riser and let it float drag-free. The sparse hackle keeps it low and quiet on the film.

Microfibbetts tails are worth the care. Tie them long and split them so they angle apart; that wide stance props the fly level and gives the outline its spindly mayfly look.

A coiled leader, tippet spools and an open fly box on slate

Rigging

Tippet
5Xhook size divided by three
Leader
Nine feet, tapered — longer and finer in flat water
  • Rig on 6X tippet, 9 to 12 feet of leader, for clear slow water.
  • Cast slightly upstream and mend early to keep the drift free of drag.
  • A light dab of floatant on the hackle only keeps the body sitting in the film.

Where and when

Hatch
Mahogany dun (Paraleptophlebia)typically spring and early fall afternoons
Target
Trout
Water type
Small wooded streams, slow glides and soft runs
Also fishes
Doubles as a general small brown mayfly on spring creeks and tailwater flats when trout sip quietly in slow, clear water.

Make it yourself

Intermediate4 materials · 11 steps

Pattern
Mahogany Dun
Style
Dry fly
Hook
Dry fly hooksize 16
Thread
Rust brown 8/0
Fly-tying materials laid out on a dark bench

Materials in the order they go on the hook

  1. TailDun Microfibbetts
  2. BodyMahogany thread
  3. HackleGrey dun rooster hackle
  4. HeadRust brown 8/0 thread

Details

Imitates
Mahogany dun mayfly (Paraleptophlebia)
Colors
Mahogany, Rust brown, Grey dun
A fly-tying vise holding a bare hook on a wooden bench

How to tie it

The steps, from first wrap to whip finish (11)
  1. Mount the size 16 dry fly hook level in the vise.
  2. Start the rust brown thread behind the eye and wrap a thin base to the bend.
  3. Build a tiny thread bump at the bend to help separate the tails.
  4. Tie in two dun Microfibbetts, one each side of the bump, about one and a half hook lengths long.
  5. Figure-eight a few thread turns between the tails so they angle apart.
  6. Switch to mahogany thread and wrap a slim, tapered body forward to the two-thirds point.
  7. Tie off the mahogany thread, then reattach the rust brown thread.
  8. Tie in the grey dun rooster hackle by the stem, shiny side forward.
  9. Wrap three to four sparse turns of hackle forward, then tie off and trim the tip.
  10. Form a small, neat rust brown thread head.
  11. Whip finish and add a drop of head cement.
Proportions (4)
  • Tails: one and a half to two hook shank lengths, split wide at the tips.
  • Hackle fibres: about one and a half times the hook gap.
  • Body: slim and tapered, covering the rear two-thirds of the shank.
  • Head: small, no wider than the body at the thorax.
Tips (3)
  • Keep thread wraps flat on the body so the segments look even and smooth.
  • Choose a stiff, short-barbed hackle so a few turns are enough to float the fly.
  • Trim any stray fibres pointing straight down so the fly lands upright.
Common mistakes (3)
  • Tails glued together: use the thread bump and figure-eight wraps so they split.
  • Fat body: wrap thin layers of thread and stop well short of the eye.
  • Crowded eye: leave room for the hackle and head before starting the body.
A dozen-fly materials kit laid out on slate with its recipe card.
The kit

Every kit size

Materials only

Size 16 · Materials only · 12 flies

$33.80

$2.82 a fly

Includes Dry fly hook · and 6 more

Every item in this kit · 7 items

Hooks & beads

  • Dry fly hook$6.501 × 25 · size 16

Thread & wire

  • Rust brown 8/0 thread$2.951 spool
  • Mahogany thread$2.951 spool

Materials

  • Dun Microfibbetts$3.501 pack
  • Grey dun rooster hackle$11.951 saddle pack

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

Size 16 · Materials only · 48 flies

$52.44

$1.09 a fly

Bought separately $55.20 · you save $2.76

Includes Dry fly hook · and 6 more

Every item in this kit · 7 items

Hooks & beads

  • Dry fly hook$132 × 25 · size 16

Thread & wire

  • Rust brown 8/0 thread$5.902 spools
  • Mahogany thread$2.951 spool

Materials

  • Dun Microfibbetts$3.501 pack
  • Grey dun rooster hackle$23.902 saddle packs

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

Size 16 · Materials only · 144 flies

$131.74

$0.91 a fly

Bought separately $149.70 · you save $17.96

Includes Dry fly hook · and 6 more

Every item in this kit · 7 items

Hooks & beads

  • Dry fly hook$351 × 100 + 2 × 25 · size 16

Thread & wire

  • Rust brown 8/0 thread$17.706 spools
  • Mahogany thread$8.853 spools

Materials

  • Dun Microfibbetts$10.503 packs
  • Grey dun rooster hackle$71.706 saddle packs

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

With vise & tools

Size 16 · With vise & tools · 12 flies

$183.80

$15.32 a fly

Includes Dry fly hook · and 15 more

Every item in this kit · 16 items

Hooks & beads

  • Dry fly hook$6.501 × 25 · size 16

Thread & wire

  • Rust brown 8/0 thread$2.951 spool
  • Mahogany thread$2.951 spool

Materials

  • Dun Microfibbetts$3.501 pack
  • Grey dun rooster hackle$11.951 saddle pack

Finishing

  • Head cement$5.951 bottle

Tools

  • Rotary pedestal vise$791
  • Ceramic bobbin$141
  • Fine-point scissors$161
  • Whip finisher$91
  • Hackle pliers$71
  • Bodkin$51
  • Bobbin threader$41
  • Dubbing wax$41
  • Canvas tool roll$121

Guide

  • Printed recipe and tying stepsIncluded1

Size 16 · With vise & tools · 48 flies

$194.94

$4.06 a fly

Bought separately $205.20 · you save $10.26

Includes Dry fly hook · and 15 more

Every item in this kit · 16 items

Hooks & beads

  • Dry fly hook$132 × 25 · size 16

Thread & wire

  • Rust brown 8/0 thread$5.902 spools
  • Mahogany thread$2.951 spool

Materials

  • Dun Microfibbetts$3.501 pack
  • Grey dun rooster hackle$23.902 saddle packs

Finishing

  • Head cement$5.951 bottle

Tools

  • Rotary pedestal vise$791
  • Ceramic bobbin$141
  • Fine-point scissors$161
  • Whip finisher$91
  • Hackle pliers$71
  • Bodkin$51
  • Bobbin threader$41
  • Dubbing wax$41
  • Canvas tool roll$121

Guide

  • Printed recipe and tying stepsIncluded1

Size 16 · With vise & tools · 144 flies

$263.74

$1.83 a fly

Bought separately $299.70 · you save $35.96

Includes Dry fly hook · and 15 more

Every item in this kit · 16 items

Hooks & beads

  • Dry fly hook$351 × 100 + 2 × 25 · size 16

Thread & wire

  • Rust brown 8/0 thread$17.706 spools
  • Mahogany thread$8.853 spools

Materials

  • Dun Microfibbetts$10.503 packs
  • Grey dun rooster hackle$71.706 saddle packs

Finishing

  • Head cement$5.951 bottle

Tools

  • Rotary pedestal vise$791
  • Ceramic bobbin$141
  • Fine-point scissors$161
  • Whip finisher$91
  • Hackle pliers$71
  • Bodkin$51
  • Bobbin threader$41
  • Dubbing wax$41
  • Canvas tool roll$121

Guide

  • Printed recipe and tying stepsIncluded1

The creator

An illustrated portrait for Dekasso (an illustration, not a photograph)

Dekasso

@dekasso

Wherever the truck rolls to a stop.

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