This is just the ticket for back-end olive hatches, when a size 14-16 hook with an olive-dubbed abdomen imitates that of the large dark olive. One tied on a size 18 hook with Orvis Superfine No.12 (Pale Morning Dun) is a good imitation of late-season pale wateries.

Material list for the Olive CDC

Hook: Size 14-18 Mustad R50

Thread: Tan 14/0

Tail: Dun cock hackle fibres

Abdomen: Wapsi Superfine dubbing No.14, olive

Wing: Natural CDC

Thorax: SLF MC Finesse No.1, brown-olive