FT Flies Polywing Trico Spinner Dry Fly
This Polywing Trico Spinner Dry Fly imitates the end stage of the small male mayflies of the genus Tricorythodes. These little bugs hatch in massive clouds on the Bow River from August and into October, and for selective trout the spinner patterns can be effective while traditional patterns are refused.
- Small mayfly dry fly
- Spinner profile
- For trout and other freshwater species
- Great late season Bow River pattern
- Sold individually
| Feature | Detail |
|---|---|
| Imitates | End stage of small male mayflies (Tricorythodes) |
| Best Time to Use | August to October on the Bow River |
| Target Species | Trout and other freshwater fish |
| Pattern Type | Spinner dry fly |
| Package | Individual fly |
FAQ
What does this dry fly imitate?
This dry fly imitates the end stage of small male mayflies of the genus Tricorythodes.
When is the best time to use this pattern?
The best time to use this pattern is from August to October on the Bow River.
Is this pattern suitable for all trout species?
This pattern is specifically effective for selective trout, and may be refused by others when traditional patterns are used.

Wendy Allan –
Fished during late August on the Bow River and caught several trout with this pattern. It mimics the real mayfly stage well and worked when other flies didn’t. Lightweight and easy to cast.
Matt Hudson –
Used it during a late season trip and saw good results. The spinner profile helped it stand out in the water. A bit more delicate than standard patterns, but effective in the right conditions.
Rebecca Ellison –
Perfect for late summer and fall fishing. Caught a brown trout on the Bow River with this fly. It’s a subtle pattern that works when trout are selective.