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Isonychia sadleri dun.  Commonly referred to as a Slate Drake or a Mahogany Dun

About the Isonychia bicolor mayfly, commonly called the Mahogany Dun, Slate Drake or Leadwing Coachman and is found on many northern Wisconsin trout streams

These creatures let us know how clean our waterways are! Learn more about Macroinvertebrates from our River Partner - @pomperaugriver

These creatures let us know how clean our waterways are! Learn more about Macroinvertebrates from our River Partner -

odonate

An online resource devoted to North American insects, spiders and their kin, offering identification, images, and information.

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