Boulder Run Olive Stonefly Nymph

by @dekasso

Nymph

Crawling between mossy rocks in fast water

A size 8 olive stonefly nymph with a gold bead, chartreuse rib and resin wing case, for trout in fast, rocky water.

An olive stonefly nymph with a shaggy, segmented body, split tail and long forward antennae. Chartreuse wire ribs the olive dubbing, and a resin-glossed mottled turkey wing case sits over barred pheasant tail legs.

Imitates
Stonefly nymphs crawling to shore before emergence
When
typically late spring into early summer
Hook
size 8
Tippet
3Xrule of three
  • Gold tungsten bead sinks it quickly
  • Chartreuse wire rib segments the body
  • Resin-coated mottled turkey wing case
  • Split biot tail and long antennae
  • Barred pheasant tail legs

On the water

A nymph fly drifting above a cobble streambed

Fuzzy olive dubbing, banded with bright chartreuse wire, runs from a split tan tail to a glossy turkey wing case. Barred legs splay out underneath. Two thin antennae reach past the gold bead like feelers testing the current.

Fish it where white water tumbles around mossy boulders. Let the bead carry it down to the stones, then dead-drift it through the seams. A short lift at the end of the drift mimics a nymph losing its grip.

UV resin over the turkey wing case is the step to get right. Use a thin coat, cure it fast, and keep it off the legs so they still move.

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

Rigging

Tippet
3Xhook size divided by three
Leader
Nine feet, with fluorocarbon tippet to get it down
  • Tie it on 3X or 4X fluorocarbon tippet; the rocks and the fish both test the knot.
  • Add split shot above it in heavy water so it ticks along the bottom.
  • Dead-drift under an indicator, or high-stick it through short pockets with a tight line.

Where and when

Hatch
Stonefly nymphs crawling to shore before emergencetypically late spring into early summer
Target
Rainbow trout, Brown trout, Cutthroat trout
Water type
Fast riffles, pocket water and boulder-strewn runs
Also fishes
Also works under an indicator in tailwater runs and as the heavy point fly in a two-nymph rig on freestone rivers.

Make it yourself

Intermediate8 materials · 12 steps

Style
Nymph
Hook
Tiemco 5263size 8
Thread
Olive 6/0
Fly-tying materials laid out on a dark bench

Materials in the order they go on the hook

  1. BeadGold tungsten bead
  2. AntennaeTan goose biots
  3. TailTan goose biots
  4. RibChartreuse wire
  5. BodyOlive hare's ear dubbing
  6. WingMottled turkey tail coated in UV resin
  7. LegsPheasant tail fibers
  8. ThoraxOlive hare's ear dubbing

Details

Imitates
Stonefly
Colors
olive, chartreuse, mottled tan, gold
A fly-tying vise holding a bare hook on a wooden bench

How to tie it

The steps, from first wrap to whip finish (12)
  1. Slide the gold tungsten bead onto the hook and mount it in the vise.
  2. Start the olive thread behind the bead and build a smooth base back to the bend.
  3. Tie in two tan goose biot antennae just behind the bead, splayed forward at about half a hook length.
  4. At the bend, tie in two tan goose biots for the tail, split into a V and about one third of the shank long.
  5. Tie in the chartreuse wire at the bend along the underside of the shank.
  6. Dub a shaggy, slightly tapered olive hare's ear abdomen over the rear two thirds of the shank.
  7. Wrap the wire forward in six to seven even ribs and tie it off.
  8. Tie in a slip of mottled turkey tail at the thorax, shiny side down, for the wing case.
  9. Tie in pheasant tail fibers on each side for the legs, angled back and down.
  10. Dub the olive thorax fuller than the abdomen, pulling the legs into position as you go.
  11. Pull the turkey slip over the thorax, tie it down behind the bead and trim the excess.
  12. Whip finish behind the bead, then coat the wing case with a thin layer of UV resin and cure.
Proportions (5)
  • Tail: split biots about one third of the shank length.
  • Abdomen: rear two thirds of the shank, tapering slightly toward the bend.
  • Wing case: covers the front third, ending just behind the bead.
  • Legs: reach roughly to the hook point.
  • Antennae: about half a shank length beyond the bead.
Tips (4)
  • Pick out the dubbing with a brush after ribbing so the fuzz stands up between the wire bands.
  • Soak the biots for a minute before tying in; they split and stay put more easily.
  • Fold the turkey slip twice over the thorax for a thicker, segmented wing case.
  • Keep the thorax dubbing loose enough to push the legs outward.
Common mistakes (4)
  • Crowding the bead: leave a small gap behind it so the wing case and whip finish have room.
  • Ribs too close together: space the wire evenly so the body still reads as segments.
  • Heavy resin that floods the legs: apply a thin bead with a fine tool and cure right away.
  • Tail biots twisting together: lay a small ball of dubbing at the bend to split them.
A dozen-fly materials kit laid out on slate with its recipe card.
The kit

Every kit size

Materials only

Size 8 · Materials only · 12 flies

$64.55

$5.38 a fly

Includes Tiemco 5263 · Gold tungsten bead · and 8 more

Every item in this kit · 10 items

Hooks & beads

  • Tiemco 5263$6.501 × 25 · size 8
  • Gold tungsten bead$91 × 25 · Tungsten

Thread & wire

  • Olive 6/0 thread$2.951 spool
  • Chartreuse wire$3.251 spool

Materials

  • Other material: Tan goose biots$92 packs · From the recipe row "Antennae"
  • Olive hare's ear dubbing$92 dispensers
  • Mottled turkey tail coated in UV resin$13.951 bottle
  • Pheasant tail fibers$4.951 pack

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

Size 8 · Materials only · 48 flies

$138.80

$2.89 a fly

Bought separately $146.10 · you save $7.30

Includes Tiemco 5263 · Gold tungsten bead · and 8 more

Every item in this kit · 10 items

Hooks & beads

  • Tiemco 5263$132 × 25 · size 8
  • Gold tungsten bead$182 × 25 · Tungsten

Thread & wire

  • Olive 6/0 thread$5.902 spools
  • Chartreuse wire$6.502 spools

Materials

  • Other material: Tan goose biots$31.507 packs · From the recipe row "Antennae"
  • Olive hare's ear dubbing$31.507 dispensers
  • Mottled turkey tail coated in UV resin$13.951 bottle
  • Pheasant tail fibers$19.804 packs

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

Size 8 · Materials only · 144 flies

$321.29

$2.23 a fly

Bought separately $365.10 · you save $43.81

Includes Tiemco 5263 · Gold tungsten bead · and 8 more

Every item in this kit · 10 items

Hooks & beads

  • Tiemco 5263$351 × 100 + 2 × 25 · size 8
  • Gold tungsten bead$501 × 100 + 2 × 25 · Tungsten

Thread & wire

  • Olive 6/0 thread$17.706 spools
  • Chartreuse wire$134 spools

Materials

  • Other material: Tan goose biots$9020 packs · From the recipe row "Antennae"
  • Olive hare's ear dubbing$9020 dispensers
  • Mottled turkey tail coated in UV resin$13.951 bottle
  • Pheasant tail fibers$49.5010 packs

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

With vise & tools

Size 8 · With vise & tools · 12 flies

$214.55

$17.88 a fly

Includes Tiemco 5263 · Gold tungsten bead · and 17 more

Every item in this kit · 19 items

Hooks & beads

  • Tiemco 5263$6.501 × 25 · size 8
  • Gold tungsten bead$91 × 25 · Tungsten

Thread & wire

  • Olive 6/0 thread$2.951 spool
  • Chartreuse wire$3.251 spool

Materials

  • Other material: Tan goose biots$92 packs · From the recipe row "Antennae"
  • Olive hare's ear dubbing$92 dispensers
  • Mottled turkey tail coated in UV resin$13.951 bottle
  • Pheasant tail fibers$4.951 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 8 · With vise & tools · 48 flies

$281.30

$5.86 a fly

Bought separately $296.10 · you save $14.80

Includes Tiemco 5263 · Gold tungsten bead · and 17 more

Every item in this kit · 19 items

Hooks & beads

  • Tiemco 5263$132 × 25 · size 8
  • Gold tungsten bead$182 × 25 · Tungsten

Thread & wire

  • Olive 6/0 thread$5.902 spools
  • Chartreuse wire$6.502 spools

Materials

  • Other material: Tan goose biots$31.507 packs · From the recipe row "Antennae"
  • Olive hare's ear dubbing$31.507 dispensers
  • Mottled turkey tail coated in UV resin$13.951 bottle
  • Pheasant tail fibers$19.804 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 8 · With vise & tools · 144 flies

$453.29

$3.15 a fly

Bought separately $515.10 · you save $61.81

Includes Tiemco 5263 · Gold tungsten bead · and 17 more

Every item in this kit · 19 items

Hooks & beads

  • Tiemco 5263$351 × 100 + 2 × 25 · size 8
  • Gold tungsten bead$501 × 100 + 2 × 25 · Tungsten

Thread & wire

  • Olive 6/0 thread$17.706 spools
  • Chartreuse wire$134 spools

Materials

  • Other material: Tan goose biots$9020 packs · From the recipe row "Antennae"
  • Olive hare's ear dubbing$9020 dispensers
  • Mottled turkey tail coated in UV resin$13.951 bottle
  • Pheasant tail fibers$49.5010 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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See everything by @dekasso