Dry FliesCDC Captive Dun
The CDC Captive Dun is a high-floating dun imitation designed to mimic a mayfly dun trapped in the surface film. The CDC feathers provide excellent floatation and movement, making this fly irresistible to trout.
Spring, Summer
Advanced
Trout
Overview
This emerger pattern simulates a mayfly stuck in its shuck. It's tied with a trailing shuck of antron or Zelon, a biot or dubbed body, and a swept-back CDC wing. Often fished in slow water or eddies during a hatch, it's a subtle but deadly pattern for technical dry fly situations.
Pattern Characteristics
Materials
Hook: Tiemco 101, size #12–#16
Thread: Olive 8/0
Tail: Coq de Leon fibers
Body: Olive Superfine Dubbing
Wing: Natural Gray CDC feathers
Hackle: Grizzly and Brown, mixed
Fishing Tips
Season
The CDC Captive Dun is most effective in the spring and summer months, during a mayfly hatch.
Presentation
Cast this fly upstream and allow it to drift naturally. The trapped-in-the-surface-film appearance can trigger aggressive strikes.
When to Use
Use this fly when you observe trout selectively feeding on duns.
Water Type
The CDC Captive Dun is best suited to moving water, where its natural drift can effectively mimic a struggling dun.
Rigging Suggestions
A 9-foot leader tapered to 5X is appropriate. Apply floatant sparingly to the CDC feathers to keep this fly riding in the surface film.
Visibility & Floatation
The CDC Captive Dun floats well due to the CDC feathers. Its olive body and natural gray wing provide good visibility against various water backgrounds.
