Geomike wrote:
Yep you named it! The GRHE is one of those general patterns that mimic small stonefly or mayfly nymphs. It is listed by many publications such as Field&Stream as one of the ten or dozen flies that you should have in your fly box. As with many patterns, you can use dyed or blended dubbing (olive works well), substitute pheasant tail, mallard or teal flank feather barbs for the tail, add a flash back, and use a bead for the head.