Description
When it’s time to get serious about catching trout and grayling, you need a fly that imitates the most important part of the caddis fly life cycle: the pupa. This stage is the final, crucial step before the caddis fly emerges as a winged adult, and it’s a phase that often drives fish into a feeding frenzy.
The caddis pupa imitation mimics the insect as it rises from the riverbed to the water's surface. It is an active, wriggling meal, and fish often key in on these helpless, buoyant insects while ignoring everything else.
The Dual-Fly Technique: Pupae rise through the entire water column before hatching. To maximize your chances, try the "Anchor fly" technique by using a heavier pupa or emerger to get your cast down to the right depth, followed by a lighter imitation. This versatile pattern can be fished as a dropper under a dry fly, dead-drifted with a strike indicator, or swung across the current to imitate the rising motion of the natural insect. It is a universal pattern that works in almost any river where caddis are present.
The Hatch-Trigger – The J:son Caddis Pupa 2 in Yellow is a highly effective imitation of a medium-sized nattslända, tied on a size #12 hook. This vibrant yellow coloration is a key trigger, mimicking the pale, gas-filled bodies of many caddis species as they begin their journey to the surface. It is especially lethal during the early stages of a hatch when fish are looking for the most visible and vulnerable prey.
Featuring J:son’s signature anatomical design, this pupa has a realistically curved and segmented body that creates a lifelike silhouette in the water. The semi-translucent material is designed to capture light, simulating the shimmer of a natural pupa. Whether you are fishing it as part of a "Dual-Fly" rig or swinging it through a riffle, this size #12 yellow pupa provides the perfect combination of size and color to provoke aggressive takes from trout and grayling in all types of water.