Hook: Daiichi 1730, size 4
Thread: Color to match pattern
Body/head: Ice chenille
Legs: Round rubber
This pattern is usually tied with regular chenille and a palmered hackle. I've substituted ice chenille for more flash and simplicity. The first image is a chartruese pattern with a sparse tail and micro ice chenille.
The 1730 hook is just right for this fly. The bent shank keeps the tail elevated nicely in the water.