The Skittering Zelon Midge imitates an impaired or cripple midge fly. Big fish often key in on midges especially in winter and having a good all around midge pattern can make or break your day on the water. Try the Skittering Zelon Midge next time you encounter midges. The Skittering Midge was developed by the guys are Blue Ribbon Flies in West Yellowstone Montana.