Blue Wing Olive ( Serratella ignita) is widely distributed throughout Europe and on British Isles in almost any running water habitat: weed beds under stones, rocks and dead logs, gravel and anywhere in the stream where the substrate offers food, protection and shelter. BWO is very important summer fly, because of its numerous appearance and prolonged period of hatching, from April till October. Our favotrite dry pattern is CDC Dun. It is proven as very effective during hatches of BWO and other similar upwinged flies.
CDC Dun, used materials in order of tying:
Hook: dry fly hook 12-18 (we’ve used Tiemco 531#12)
Thread: brown 12/0, thinner is better, you can make more wraps without change of the body shape.
Tail: few fibers of Cock de Leon
Body: stripped cock’s quill, brown, olive, cream any color to match the body of natural
Cover of thorax: polyacrilic thread, it splits the wings
Thorax: rusty brown dubbing (Fly Rite floats great)
Forewings: CDC fibers in bunch
Front wings: CDC points with some quill in the center.