I'm thinking a mess of bluegills (of course, that would require Spring at some point); could pass for a green rockworm. Looking for something a bit lighter hackle-wise, I used hen pheasant; partridge would work fine, too.
hook - Mustad 94840 #12
thread - Danville 6/0 black
rib - Flashabou gold
abdomen - rabbit chartreuse
thorax - hare's mask
hackle - hen pheasant
head - ostrich herl black
Part 1
mash barb, start thread 1 hook eye width back from the eye
prep hackle, tie in by tip; tie in rib and wrap back to bend
dub thread/dub body - one turn behind the rib, then forward to 2/3 mark
counterwrap rib; tie off/trim