Osobenus yakimae Stonefly Nymph Pictures

Mayflies

Caddisflies

Stoneflies

Classification

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Plecoptera (Stoneflies)

» Family Perlodidae (Springflies and Yellow Stones)

» Genus Osobenus

» Species yakimae

This 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.

This stonefly was collected from the South Fork Snoqualmie River on June 13th, 2019 and added to Troutnut.com on June 14th, 2019.

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Osobenus yakimae Stonefly Nymph from the South Fork Snoqualmie River in Washington

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Osobenus yakimae Stonefly Nymph Pictures

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