The WD - 40 is used to imitate the
Imago stage of a mayfly or baetis nymph. It can also be used as a Blue
Wing Olive nymph or midge imitation. It can be tied in a variety of colors from
red, gray, black, olive or rusty brown.
The "WD" stands for wood duck, which is the material used for the tail and
wing-case of this fly. It is basically simple in design but very effective on
tail-waters when the trout are moving up in the water column prior to a hatch.
I also have tied a flash-back version using pearl Krystal flash for the
wing-case.
The WD-40 was originally
developed by John Engler on the Frying Pan River as an emerging midge pattern,
but can be used just about anywhere. Fish the WD-40 in a dead-drift as a midge
pupa with split-shot and a strike indicator. Let it swing at the end of the
drift and rise towards the surface as an emerging nymph would do. I have found
most strikes occur at this time, so be ready!
Instructions
1) Start the thread close to the eye and wrap towards the bend of the hook. Tie
in about 5 to 7 wood duck flank barbules for the tail. Wrap the thread all the
way back towards the head forming the body of the fly with the thread.
2) Pull the butt ends of the wood duck feathers back over the body so that they
are aiming towards the tail. Wrap the thread towards the back leaving enough
room for the thorax (about 1/3 of the length of the hook).
3) Dub the thread for the thorax (or tie in peacock herl) and wrap towards the
eye of the hook and tie off.
4) Pull the wood duck ends over the thorax to form the wing-case and tie off.
Cut off the ends of the wood duck and whip finish the head of the fly. Add a
drop of head cement.
5) Brush or pick-out the dubbing to simulate legs.
|
| 
