For immature nymphs in the multi-year life cycle, scale down the hook and bead size and omit the egg yarn.
Hook- #8 Jig/hook shank trailer in 25# mono loop
Thread-3/0 Black Monocord
Weight-3/16' Slotted Black Tungsten Bead followed by 16 wraps of Lead Free Wire
Body-Sugar Bush Bliss Midnight Yarn dubbing (70% Merino Wool, 20% Mulberry Silk & 10% Cashmere) + Rubber legs
+Hot Orange Egg Yarn
Rib- BR UTC Red Ultra Wire
Making the trailer...
Mount a #6 4XL Streamer hook to be cut off, start a thread wrap the length you want and tie in the tail

Tie in the rib

Dub the body

Wind the rib forward, finish at the eye, take the hook out, trim the tail, cut off the shank behind the tail, dab on head cement at both ends

Secure the jig hook in the vise, wrap the mono from the bead and insert into the trailer eye and tie off back down the shank. put head cement or super glue along the thread wrap, secure and wind the lead free wire toward the bend, tie it off and twist off the wire

Brush out some yarn to tie in around the shank for a skirt to cover the mono trailer connection

Trim the yarn butt ends and wrap down with tying thread to meet the lead wire wrap

Tie in the wire rib

Dub the body down to the location of the back leg, wind the rib there as well

Tie in a long rubber leg on each side to make the front and rear legs

Tie in some egg yarn between both legs, form another dubbing loop long enough to X-wrap around the legs to position them and fill in the gap to the bead

Wind the dubbing and the rib to the bead and form a platform for the feelers to be tied toward the head

Tie in the feelers, dub over the last wraps and whip finish at the bead, add a drop of head cement at the bead, trim the skirt to length to cover the trailer transition, trim the orange yarn to flow a little down the thorax

Wet Salmon Fly nymph ready to emerge...
