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Dry FliesC-13 (Cicada-13)

The C-13 (Cicada-13) is a dry fly pattern designed by Allan Woolley. This effective pattern combines traditional materials with proven techniques for consistent results in a variety of water conditions.

Season
Spring, Summer, Fall
Difficulty
Beginner
Target Species
Trout
Updated
Feb 2026
C-13 (Cicada-13) fly pattern - imitates Mayflies, Caddis tied for Trout

Overview

Allan Woolley's C-13 (Cicada-13) is designed to imitate the periodic cicada emergences that create explosive surface feeding. The pattern features a foam or dubbed body with splayed wings to capture the terrestrial's distinctive silhouette. Its buoyant construction allows it to float high and creates surface disturbance on impact, triggering aggressive strikes during cicada falls.

Materials

Hook: Hayabusa model 55233 hopper hook dry 2x long size 8 -10
Thread: Danville's 6/0
Body: 3 parts - brown deer spun and trimmed, brown hackle, brown dubbing
Wing: brown deer, stacked and left untrimmed

Behavior & Presentation

Natural Behavior: Adult caddis crash-land after mating flights, beating wings frantically while trapped in the surface film. These struggling insects provide high-calorie targets that trout recognize as easy meals during peak emergence periods.

Where Trout Eat It: Surface film along banks and overhanging vegetation where terrestrials naturally fall.

How to Fish It: Plop casts near banks create commotion that attracts fish, then allow drag-free drift with subtle twitches imitating struggling insects.

Best Water: Target banks with overhanging vegetation, foam lines, and structure where large terrestrials accumulate after wind deposits them.

Strike Type: Aggressive takes as opportunistic feeders respond to the large profile.

Fishing Strategy

Rigging Suggestions: Use a 9-12 foot leader tapering to 5X tippet for delicate presentations. Apply floatant to the body and hackle.

Seasonal Timing: Most effective during peak feeding periods at dawn and dusk. Water temperatures between 45-65°F typically produce best results.

Pro Tips: During actual cicada emergences, fish will key on these large protein sources. Even outside emergence years, the large profile triggers strikes from opportunistic and aggressive trout.

Entomology

When adult caddisflies crash-land on the water after mating flights, they struggle to become airborne again, beating their wings frantically while trapped in the surface film. Trout recognize this energetic but predictable struggle as an easy high-calorie meal during peak emergence periods.

Order
Trichoptera
Common Name
Caddisfly
Organism Type
insect
Life Stage
adult

Pattern Characteristics

Beginner Difficulty
Trout
Moving Water
Stillwater
Spring
Summer
Fall
Imitates: Mayflies, Caddis
Worldwide
dead-drift
baetis-hatch
caddis-hatch
classic
beginner-friendly