Isonychia Dry Fly Mayfly

The Isonychia (also known as Great Western Leadwing, Slate Drake, Leadwing Coachman, Dun Variant, Mahogany Dun or Iso) are found in many rivers of the U.S. They can first appear in June, and the hatch can extend through October. The body is olive to brown, with grey wings. These are big mayflies so you can match the hatch with #8 - #12. Good Spinner falls occur in the morning or evening.
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Isonychia Dry Fly Mayfly - Borcher's Parachute

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Size 10 (162 Available)
Size 12 (175 Available)
Size 14 (175 Available)
Size 16 (175 Available)

  • Code: D-BCP
  • Price as low as: $1.25
  • Quantity in Basket: none

This pattern works great as an imitation for any dark mayfly, or as an attractor pattern.


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Borcher's Parachute
1-2 flies
$1.60 ea.
3-5 flies
$1.41 ea.
6-11 flies
$1.31 ea.
12+ flies
$1.25 ea.
Average Customer Rating (5 flies is best): Not yet rated
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Isonychia Dry Fly Mayfly - Brown Drake Adult

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Waiting List Size 10

  • Code: D-BDAD
  • Price as low as: $1.17
  • Quantity in Basket: none

The Brown Drake Adult is a very diverse and effective pattern that imitates eachof the following mayfly hatches:

Brown Drakes
Dark Green Drakes
Grey Drakes
Hendricksons
Mahogany Duns or Blue Quill's
March Browns
Quill Gordons
Red Quills

Don't leave home without this diverse mayfly.


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Brown Drake Adult
1-2 flies
$1.50 ea.
3-5 flies
$1.32 ea.
6-11 flies
$1.23 ea.
12+ flies
$1.17 ea.
Average Customer Rating (5 flies is best): Not yet rated
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Isonychia Dry Fly Mayfly - Brown Drake Paradrake

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Size 10 (311 Available)
Size 12 (284 Available)
Size 14 (41 Available)

  • Code: D-BRDR
  • Price as low as: $1.32
  • Quantity in Basket: none

The mahogany dun imitates the adult Isonychia bicolor mayfly. Brown drakes are a burrowing type of mayfly, but when they hatch, trout key in to this large trout fly. This mayfly hatches twice during the year with intermittent hatches in between. Trout absolutely lose their inhibitions at the sight of this mayfly. Good luck!!!


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Brown Drake Paradrake
1-2 flies
$1.69 ea.
3-5 flies
$1.49 ea.
6-11 flies
$1.39 ea.
12+ flies
$1.32 ea.
Average Customer Rating (5 flies is best): 5.00
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Isonychia Dry Fly Mayfly - Dark Henny

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Size 10 (33 Available)
Size 12 (127 Available)
Size 14 (114 Available)
Size 16 (37 Available)

  • Code: D-DKHY
  • Price as low as: $1.19
  • Quantity in Basket: none

The Dark Henny imitates a Dark Hendrickson Mayfly as well as a Brown Drake and Isonychia Mayfly.


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Dark Henny
1-2 flies
$1.53 ea.
3-5 flies
$1.35 ea.
6-11 flies
$1.25 ea.
12+ flies
$1.19 ea.
Average Customer Rating (5 flies is best): Not yet rated
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Isonychia Dry Fly Mayfly - Dark Roberts ISO

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Size 8 (84 Available)
Size 10 (126 Available)
Size 12 (1 Available)

  • Code: D-DRIS
  • Price as low as: $1.37
  • Quantity in Basket: none

The Robert's style of tying the body is represented well in this fantastic Iso parachute pattern. Moose tail and deer body add to the realism and the parachute holds it firmly in the film.


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Dark Roberts ISO
1-2 flies
$1.75 ea.
3-5 flies
$1.54 ea.
6-11 flies
$1.43 ea.
12+ flies
$1.37 ea.
Average Customer Rating (5 flies is best): Not yet rated
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Isonychia Dry Fly Mayfly - Daytime Drake

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Size 8 (86 Available)
Size 10 (63 Available)
Size 12 (96 Available)

  • Code: D-DTD
  • Price as low as: $1.40
  • Quantity in Basket: none

The Daytime Drake is a great representation of a hatching drake, Brown or Green. Great pattern to fish with a soft hackle or unweighted PT nymph as a dropper in the riffles.


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Daytime Drake
1-2 flies
$1.79 ea.
3-5 flies
$1.58 ea.
6-11 flies
$1.47 ea.
12+ flies
$1.40 ea.
Average Customer Rating (5 flies is best): Not yet rated
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Isonychia Dry Fly Mayfly - Dry Ice Green Drake

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Size 10 (110 Available)
Size 12 (171 Available)
Size 14 (104 Available)

  • Code: D-DRGD
  • Price as low as: $1.29
  • Quantity in Basket: none

The Green Drake (Ephemera guttulatais) one of the largest mayflies available to trout. They hatch mid-day, and will cause trout to completely abandon any other type of food. The nymph emerges to the surface of the water quickly, and after drying its wings, flies off. This leaves little time for trout to grab a bite, so they become very opportunistic when they see the Dry Ice Green Drake fly pattern.


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Dry Ice Green Drake
1-2 flies
$1.66 ea.
3-5 flies
$1.46 ea.
6-11 flies
$1.36 ea.
12+ flies
$1.29 ea.
Average Customer Rating (5 flies is best): Not yet rated
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Isonychia Dry Fly Mayfly - Extended Body Brown Drake

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Size 8 (107 Available)
Size 10 (95 Available)
Size 12 (91 Available)
Size 14 (107 Available)
Size 16 (106 Available)

  • Code: D-EBBD
  • Price as low as: $1.29
  • Quantity in Basket: none

Extended body mayflies were made popular by Mike Lawson and the theme has been carried on into more detailed patterns such as this. Trout eat this fly!


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Extended Body Brown Drake
1-2 flies
$1.66 ea.
3-5 flies
$1.46 ea.
6-11 flies
$1.36 ea.
12+ flies
$1.29 ea.
Average Customer Rating (5 flies is best): Not yet rated
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Isonychia Dry Fly Mayfly - Flatwater Spinner

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Size 10 (51 Available)
Size 12 (47 Available)
Size 14 (50 Available)
Size 16 (20 Available)

  • Code: D-FWSP
  • Price as low as: $1.19
  • Quantity in Basket: none

Spinners have no chance of fleeing, and become an easy to access snack for hungry trout. Fish this spinner with a monofilament tippet when March Browns and brown drakes are present


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Flatwater Spinner
1-2 flies
$1.53 ea.
3-5 flies
$1.35 ea.
6-11 flies
$1.25 ea.
12+ flies
$1.19 ea.
Average Customer Rating (5 flies is best): Not yet rated
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Isonychia Dry Fly Mayfly - Green Drake - Extended Dun

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Size 10 (151 Available)
Size 12 (21 Available)
Size 14 (160 Available)

  • Code: D-GRDC
  • Price as low as: $1.25
  • Quantity in Basket: none

The Green Drake (Ephemera guttulatais) one of the largest mayflies that trout have available to them in their diet. The green drake hatches mid-day, and will cause trout to completely abandon any other type of food. The nymph emerges to the surface of the water quickly, and after drying its wings, flies off. This leaves little time for trout to grab a bite, so they become very opportunistic when they see the realistic extended dun fly pattern.


Note: This product contains wildlife, which cannot be exported beyond the U.S. and its territories.
Prices for Green Drake - Extended Dun
1-2 flies
$1.60 ea.
3-5 flies
$1.41 ea.
6-11 flies
$1.31 ea.
12+ flies
$1.25 ea.
Average Customer Rating (5 flies is best): 5.00