The Brits have some some interesting variations on the old Montana nymph. The one I found here had a Straggle thorax; subbed in dubbing since I had none.

hook - WFC Model 11 #14
thread - Danville 6/0 black
tail - pheasant tail
rib - small wire silver
abdomen - tying thread
wingcase - pheasant tail
hackle - hen black
thorax - Ice Dub Caddis Green

Regards,
Scott