This fly imitates the early stages of a hatching mayfly perfectly. A small bead allows the fly to penetrate the surface quickly but still maintains a realistic, slim profile. Fishing this fly off a dry allows the angler to suspend/drop the fly anywhere in the water column the fish are feeding. As with all John Barr flies, the Barr Emerger is simple and extremely effective.
PMD is pictured, BWO is dressed accordingly.