Here's a fly that I had an absolute ball with on the River Dun a couple of weeks back. The section of the river I was fishing was quite deep and narrow and this little guy made for a day of sight nymph fishing at its best. They simply can't resist the little rubber legs. I tried a couple of different colours but olive and black was the best by far.
Hook: Tiemco 2499 SP #14
Bead: 3mm gold tungsten
Underweight: 0.015" lead wire
Thread: UTC 70 Black
Tail: fiery brown goose biots
Body: Olive and black UTC wire, size brassie, wrapped together
Thorax: peacock Ice Dub
Legs: black rubber, extra fine
Thorax Cover: Black Thin Skin; Silver holographic tinsel; coated with Bug Bond
Three quarter view:
It's pretty easy to tie. The only difficult part being the biot tail because of the shape of the hook and the intrusion of the vice. My tails are too long on this one. The Bug Bond is so much easier to use than epoxy.