I went googling and found this:

Hook: 2xl nymph hook size 10 or 12
Thread: black yellow or red ?
Tail: red hackle fibers
Body: Black Chenille
Legs: White rubber legs, ( one strip tied in the middle on each side to make four legs on the finished fly, As you wrap the chenille take a wrap of chenille over the tie down point to split the legs so one points back and one points forward on each side)
Hackle collar: wet fly hackle in red or yellow