Call them Sulphurs, call them Light Hendricksons, call them Ephemeralla invaria. Call these mayflies what you want, but when they’re hatching, the fishing can be spectacular. This parachute dry fly pattern is easy to spot and sits down in the film where the fish like to see their prey. Wings not quite dry, mayfly not quite ready to fly. Color, Sulphur. Size: 14, 16, 18, 20.