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Male Acentrella insignificans (Tiny Blue-Winged Olive) Mayfly Nymph Pictures



 Another nymph probably of the same species as this one emerged and was photographed as a dun and partly-molted spinner.

This mayfly was collected from the Yakima River on September 12th, 2020 and added to Troutnut.com on September 19th, 2020.


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