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Female Cinygmula (Dark Red Quills) Mayfly Dun Pictures

 This one was collected in association with a male spinner probably of the same species.

This mayfly was collected from the South Fork Stillaguamish River on July 1st, 2017 and added to Troutnut.com on July 2nd, 2017.

Markings are 1/16 inch.  Female Cinygmula (Dark Red Quills) Mayfly Dun from the South Fork Stillaguamish River in Washington
Markings are 1/16 inch.
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