Foam sheet Tan fly tying foam (One strip about 2 mm thick and 2.5-3 mm wide)
Widow's Web (or Antron) Light/white widow s web (One strand for the underwing)
Deer hair, soft Natural deer hair (Two small bunches for the wing)
How to tie it
Start tan thread on a #16 dry fly hook and coat the whole shank with a thread base to add some color under the foam.
Cut a strip of 2 mm tan foam about 2.5-3 mm wide with a razor blade. Hold the rear end just proud of a pair of closed scissor blades, touch it with a lighter to melt it, then pinch it in the blades so it fuses into a neat rounded tail end.
Lay the foam strip flat along the top of the shank and tie it down at about the 60% point with just enough wraps to hold it. The body should extend a little past the bend, no longer.
Tie in a single strand of Widow's Web (or Antron) on top at the same point as an underwing, tips evened, and trim it just a shade longer than the foam body.
Stack a small bunch of soft deer hair and tie it on top at the same tie-in point with the tips extending back over the body. A couple of wraps that bite down into the bunch will flare it nicely.
Gather the deer hair butts, cut them off at an angle, and lay that trimmed clump underneath the shank at an angle as the lower portion of the wing. Sweep everything back, take a couple of wraps through it to secure, then push it all rearward to open up space behind the eye.
Tie in a second, smaller bunch of stacked deer hair right behind the eye, matched to the same length as the first. Let it flare, push the butts back and bite them down with thread, keeping the hook eye clear (use a bodkin to push stray hair back if needed).
Pack the hair back, put in two or three half hitches or a whip finish behind the eye and trim the thread.
Finish by shaping the foam: clip at an angle down each side and take a cut underneath so the body has a flat bottom and a low caddis profile. Sharp scissors are essential here.