This Fly is caleed a Lace Midge emmerger.
I substituded the clear vinyl tubing for the "Liquid Lace" product It can be found on pg130 of the Tying Emergers book by Jim Schollmeyer and Ted Leeson.
Originator: Bruce Salzberg
Hook: TMC 2487, or other fine wire scud hook
Thread: Red 8/0
Abdomen:Clear "Liquid Lace" injected with baby oil
Thorax: Golden/brown rabbit dubbing
Wing Case and Tuft: One white Type 1 or Type 2 CDC feather.
Let me know if you need detailed tying instructions