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Male Drunella spinifera (Western Slate Olive Dun) Mayfly Nymph Pictures

 In a bucket full of Drunella coloradensis nymphs, this was the only specimen of Drunella spinifera (and the first one I've found anywhere).

This mayfly was collected from Mystery Creek #199 on July 28th, 2019 and added to Troutnut.com on July 30th, 2019.


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