An extremely effective Hi-Viz, Hi floating mayfly dun. This little pattern has a few interesting techniques that help make this a deadly choice on the end of your line during mayfly time. 

CDC Mayfly Dun fly pattern

• Hook: Mustad R30 # 10
• Tying thread: Sheer 14/0 Brown
• Tail: Moose body hair
• Wings: 3 x natural CDC hackles for each wing
• Body: Cream Super Fine dubbing
• Rib: UNI Mono Thread Wine 3/0
• Hackle: Golden Badger

How to tie CDC Mayfly Dun fly video