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Female Siphlonurus autumnalis (Gray Drake) Mayfly Spinner Pictures

This mayfly was collected from Crazy Beaver Spring on November 30th, 2006 and added to Troutnut.com on June 28th, 2011.

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Female Siphlonurus autumnalis (Gray Drake) Mayfly Spinner from Crazy Beaver Spring in Montana
AuthorBnewell
CameraNIKON D80

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