Trico Polywing Spinner

The Trico Polywing Spinner is a specialized fly pattern designed to imitate the Tricorythodes mayfly, commonly referred to as Trico. This small, delicate mayfly is prevalent in many streams and rivers and often hatches in dense swarms, providing a significant feeding opportunity for fish.

Anglers tie the Polywing Spinner to imitate the spent or spent-wing stage of the Trico mayfly when it rests on the water’s surface after mating and laying eggs.

It’s distinguishing feature is the polypropylene or similar synthetic material. Fly tyers use it to create a transparent or semi-transparent wing that mimics the delicate wings of the Trico mayfly.

Tyers usually tie this pattern in very small sizes, typically ranging from #18 to #26, to match the small size of the natural Trico. Its design aims for accuracy in silhouette and profile rather than intricate details.

Anglers often fish this pattern during Trico hatches in the early morning or late evening. Present the Trico polywing spinner it delicately on the water’s surface to mimic the natural insect. That will attract selective trout feeding on these small flies.

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