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Female Tricorythodes (Tricos) Mayfly Spinner Pictures



This mayfly was collected from the Big Hole River on August 11th, 2018 and added to Troutnut.com on June 11th, 2019.

Each length marker is 1/16"  Female Tricorythodes (Tricos) Mayfly Spinner from the Big Hole River in Montana
Each length marker is 1/16"

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