Hook: Your favorite nymph hook in stonefly sizes Thread: Yellow or Gold Weight: Lead wire or equivalent Tail: Pheasant tail fibers Over Body case: Mallard flank Abdomen: Stripped brown hackle stem Thorax: Yellowish dubbing Legs: Hungarian partridge or equivalent The above fly is just one color and as the tyer you can tie them in whatever color of stonefly that inhabits your area streams NOTE: this is one version of this fly. there are other version with the same name, slightly different materials. be creative. think about it. experiment.