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Midge / EmergersSmokejumper

The Smokejumper is a great emerger pattern that can mimic a variety of insects. Its bright beadhead and CDC wing make it highly visible and attractive to fish.

Season
Year Round
Difficulty
Intermediate
Target Species
Trout
Updated
Apr 2025
Smokejumper fly pattern - imitates Mayflies, Midges tied for Trout

Overview

A surface emerger that mimics midges or mayflies in transition. It features a split microfibbets tail, a sparse dubbing body, and a puff of CDC tied forward as a wing to mimic an emerging insect. It floats flush in the film, ideal for picky fish in slow water.

Materials

Hook: Fulling Mill 5065 barbless Czech Nymph.
Thread: UTC 70 Denier, yellow olive.
Rib: Ultra wire, extra-small, silver.
Wing case: CDC puff, light dun.
Thorax: Peacock herl.

Behavior & Presentation

Natural Behavior: Emerging mayflies hang suspended below the surface meniscus with nymphal shucks splitting, completely defenseless as duns extract themselves from exoskeletons. This transitional vulnerability during hatch windows triggers selective feeding from trout recognizing predictable emergence patterns.

Where Trout Eat It: Developed for Bighorn River conditions where fish take this pattern in the surface film during mayfly and midge emergences.

How to Fish It: Fish in surface film with body hanging below while CDC wing rests on top, or trail behind weighted nymph.

Best Water: Focus on smooth glides with gentle current, spring creek tailouts, and foam lines where emergers concentrate near surface.

Strike Type: Look for subtle sips in the film or barely perceptible indicator movements as takes are often gentle.

Fishing Strategy

Rigging Suggestions: Use 5X-6X tippet (4-5 lb test) on 10-12 foot leaders. Fish as point fly or 18-24 inches behind a size 16-18 dry fly in tandem rigs.

Seasonal Timing: Most productive November through April during midge hatches, and June through September for mayfly emergences. Peak activity occurs when water temps are 38-48°F for midges, 52-62°F for mayflies.

Pro Tips: The silver bead and CDC wing make this visible to both angler and fish. Apply floatant only to the wing to keep the fly riding in the film rather than fully floating.

Entomology

Emerging mayflies hang suspended just below the surface meniscus, their nymphal shucks splitting as the dun begins to extract itself from its exoskeleton. This transitional moment leaves them completely defenseless, triggering selective feeding by trout who recognize this predictable vulnerability during hatch windows.

Order
Ephemeroptera
Common Name
Mayfly
Organism Type
insect
Life Stage
general

Pattern Characteristics

Intermediate Difficulty
Trout
Moving Water
Stillwater
Year Round
Imitates: Mayflies, Midges
Rocky Mountain
Bighorn River
dead-drift
baetis-hatch
midge-hatch
swing
low-clear-water

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