Pattern Library
Tan Caddis Pupa fly pattern
Emerger · #39 of 129

Tan Caddis Pupa

Also known as: Caddis Pupa Tan

Imitates: Emerging caddis pupa rising to the surface

Quick Reference

Best Sizes
#14-18
Best Season
Late spring through fall (caddis season)
Best Conditions
Just before and during caddis hatches, especially evenings
Water Temp
55-68°F
Recommended Tippet
5X

How to Rig It

Drop 18" below an Elk Hair Caddis as a dry-dropper, or swing as a wet fly across riffles.

How to Present It

Dead-drift through the head of a riffle, then swing it on the rise at the end of the drift. The lift imitates a caddis pupa shooting toward the surface to emerge.

Why It Works

Caddis pupae rise fast through the water column to emerge — trout key on the rising motion. The sparkle wing case and gold bead reflect light like trapped air bubbles inside a real emerging pupa.

History

The bead-head caddis pupa style emerged in the 1990s as anglers realized swinging wet flies imitated emerging caddis better than dead-drifting. Gary LaFontaine's research codified the importance of the air-bubble trigger.

Pro Tip

In the last hour of light during a caddis hatch, fish a tan pupa on the swing across riffle tailouts. Expect aggressive grabs as fish chase emerging bugs to the surface.

Frequently Asked Questions

What's the difference between a Tan Caddis Pupa and a Sparkle Pupa?+

Both imitate emerging caddis. The Sparkle Pupa has a bubble of trailing Antron; the bead-head pupa has a tungsten bead and rides deeper before swinging up.

When should I swing the caddis pupa vs dead-drift?+

Dead-drift before the hatch starts; swing during active emergence. The swing imitates the rising pupa and triggers reaction strikes.

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