Dry FliesShimazaki CDC Ant
The Shimazaki CDC Ant is an elegant terrestrial pattern that uses CDC feathers to create a realistic, low-riding ant imitation with excellent flotation. This pattern features a black superfine dubbing abdomen and head separated by a sparse black hackle collar that suggests legs, with a wing of mixed dun and white CDC feathers that provides both flotation and the subtle wing impression of a flying ant. The design creates a naturalistic profile that sits properly in the surface film.
Summer, Fall
Intermediate
Trout
Overview
This Shimazaki pattern from Charlie's Fly Box represents a sophisticated approach to ant imitation that emphasizes the natural properties of CDC. The pattern is named after legendary Japanese tier Masami Shimazaki, known for innovative CDC techniques. The construction creates the distinctive segmented body shape of natural ants - a bulbous abdomen, narrow waist (created by the hackle), and rounded head. The mixed dun and white CDC creates a subtle, natural-looking wing that also provides flotation without the bulk of traditional wing materials. The black hackle is wrapped sparsely and then trimmed on top and bottom, leaving fibers extending horizontally to suggest the splayed legs of a struggling ant. This trimming technique is key to achieving the proper low-riding profile.
Pattern Characteristics
Materials
Hook: Tiemco 100, #14-16
Thread: UNI 6/0, black
Abdomen: Superfine Dubbing, black
Thorax/Legs: Rooster Neck Hackle, black
Wing: CDC, dun and white
Head: Superfine Dubbing, black
Fishing Tips
Season
Most effective during summer and fall when ants are active and frequently end up on the water. Particularly productive during windy conditions that blow terrestrials onto the surface.
Presentation
Fish with a dead drift along banks, under overhanging vegetation, and in foam lines where terrestrials collect. Ants often struggle on the surface, so occasional subtle twitches can trigger strikes from wary fish.
When to Use
Select this pattern during terrestrial season when trout are looking for ants. Also effective as a searching pattern during summer when no hatch is occurring. The CDC wing version works well for winged flying ant falls.
Water Type
Versatile pattern for both moving water and stillwater. Particularly effective along grassy banks, under trees, and near any vegetation where ants live. Works well in both slow pools and moderate currents.
Rigging Suggestions
Fish on a 12-foot leader tapering to 5X-6X fluorocarbon tippet. The CDC provides natural flotation - avoid paste floatants that can mat the CDC fibers. Use a desiccant powder if needed to restore flotation.
Visibility & Floatation
The white CDC mixed with dun provides visibility for the angler while the overall CDC wing keeps the fly floating in the film. The pattern rides low like a natural ant, making it highly effective on selective fish.
