Flymph I do think you mean. It is a near surface emerger..soft hackle design with moving hackle. Guy name Hidy termed it a flymph far back...not a nymph, and not an adult fly. Remember this about a lot of flies especially fished subsurface....MOTION is the key. The fly guy often wants to give it a more technical, specific bug induced reaction to feed, but it often just gets down to movement indicating life rather than a twig, bark, or other particulate in the drift. Also something to focus on is how many dead bugs, stillborns, dead egg layers, are drifting mid level in the drift?...lots of them, an virtually all the time during the Summer season especially. I hearken back to my small buggers as often a viable alternative. They can represent dragon flies, stone flies. When I mentioned to the Lake Guru out West here, the guy form Oregon, Denny Ricards, my success in lakes with small buggers, and my thinking they more closely represent insects fish see like dragon fly nymphs, damsels, he says to me, "Do you know why your small wooly buggers work?" " Why I asked?"...Motion he tells me. "They reacted to motion!" Then there came the age of the rubber legged dries!..once only thought to apply to pan fish. Trout went crazy over the rubber legged motion.