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Stonefly Genus Osobenus

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Pictures of 1 Stonefly Specimen in the Genus Osobenus:

Osobenus yakimae Stonefly NymphOsobenus yakimae Stonefly Nymph View 6 PicturesThis nymph keys out to Osobenus yakimae, and a comparison of the markings with a specimen on flyfishingentomology.com (http://www.flyfishingentomology.com/WAStoneflyDescription.php?Fa=Perlodidae&Ge=Osobenus) provides a good verification.
Collected June 13, 2019 from the South Fork Snoqualmie River in Washington
Added to Troutnut.com by Troutnut on June 14, 2019

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