Here is the fly pattern sheet for Pay Dorsey’s Mercury Blood Midge.
Materials
Hook:
Daiichi 1270 or Tiemco 200R #18-22
Bead:
Spirit River Hi-Lite Glass Bead Quick Silver (SL) Extra Small
Thread:
Red 8/0 UNI thread
Body:
Use thread for body
Rib:
Gold wire, extra small
Thorax:
Peacock herl
Here is a link to Pat Dorsey demonstrating how to tie the fly.