Midge / EmergersCaddistrophic Pupa

A caddis pupa pattern designed for maximum movement and realism, the Caddistrophic Pupa uses floss, CDC, and Fluoro Fibre antennae to imitate an emerging caddis. Perfect for slow water or picky trout feeding in the film.

Season
Spring, Summer, Fall
Difficulty
Intermediate
Target Species
Trout
Caddistrophic Pupa - Image source: Charlie's Fly Box
Image source: Charlie's Fly Box

Overview

The Caddistrophic Pupa is a modern caddis emerger pattern tied with a slim, segmented body and a prominent bubble-style wingcase made from soft materials like CDC, Antron, or Zelon. The thorax is often dubbed with a buggy blend, and the pattern may feature a hot spot or bead for extra visibility. It rides low in the water, mimicking a caddis breaking through the surface film. The sparse materials and realistic silhouette make it especially effective during heavy caddis hatches.

Pattern Characteristics

Intermediate Difficulty
Trout
Stillwater
Moving Water
Spring
Summer
Fall
Imitates: Caddis Pupae

Materials

Hook: TMC 2487 #14–18
Bead: Black tungsten, sized to hook (optional)
Thread: 8/0 Olive Dun or Black Uni
Rib: Chartreuse Ultra Wire (Brassie)
Shellback: Brown Super Floss
Abdomen: Olive Hairline Dubbing
Wing Buds: Brown Super Floss
Collar: Natural Dun CDC
Antennae: Cream Shrimp Fluoro Fibre
Head: Black Ice Dub

Fishing Tips

Season

Spring, Summer, Fall

Presentation

Dead drift or swung during a hatch

When to Use

During caddis emergence, especially in slower or glassy water

Water Type

Stillwater, Moving Water

Rigging Suggestions

Fish alone or behind a larger dry; also effective in a two-nymph rig near the surface

Visibility & Floatation

Sinks slowly unless weighted; CDC collar gives natural buoyancy and subtle movement; Fluoro Fibre enhances visibility in low light