i got the material list by looking at the fly (almost 30 years tying flies can do that )
i changed the link because the umpqua had colors listed and you can see the materials better
i couldnt find a step by step but it shouldnt be any harder the tying a stonefly nymph
tying tip - stonefly bodies are 50% thorax & 50% body
step by step
put bead on hook
weight hook if you want it heavier
tie in tails
tie in wire rib
tie in peacock herls
dub thread with ice dubbing and wrap forward to the 50% point of the flies body
pull herls forward and tie down with thread
rib body with wire
trim turkey feather slip to wing case shape and tie in on top
tie in legs on each side
dub thorax
repeat for the next 2 segments of the thorax