Trico Parachute. The highly visible Trico Spinner Parachute (Tricorythodes) is just a great little dry fly. It is designed to sit lower into the surface film than a traditional Dry Fly it main hackle being tied horizontally, yet still having the easy o spot up standing lighter coloured crown typical of all parachute fly patterns. This Mayfly dry fly generates a superb and tempting silhouette for any hungry Trout.