Emerger Flies represent insects as the emerge from the bottom of the water to the surface. As they emerge they are vulnerable to fish. Match the hatch correctly and you're going to have a field day with emerger flies. Some common emergers flies are Caddis Flies and Mayflies.
Hook Standard dry fly size 10, 12, 14, 16, 18
Wing Tan or Olive rabbits foot fur
Shuck Brown Darlon
Body Superfine Antron dubbing