The Green Humpy fly is a classic dry fly pattern used in fly fishing. It is known for its buoyancy and visibility on the water's surface. The fly typically features a distinctive hump on its body, created with dubbed materials, and a palmered hackle that contributes to its flotation. The green coloration is often used to imitate a variety of insects or attract fish in different situations. Green Humpies are commonly employed in trout fishing and can be effective during caddis or stonefly hatches.