The Dark Lord Stonefly is a sleek fly pattern that works well when the stonefly hatches are on. It has a dark electric blue neck, bead head, and barbless hook. Stonefly nymph patterns work extremely well for trout, smallmouth and largemouth bass, walleye, and other species of fish.
If running the Dark Lord Stonefly in a multi-hook setup, Zinger Fishing recommends using the stonefly as your top nymphing hook. It seems to work the best as it is a larger nymph.