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Small Western Red Quills

Scientific Name
MatchScientific Name
***Rhithrogena undulata

This common name refers to only one species.

Mayfly Species Rhithrogena undulata

These are often called Small Western Red Quills.
This is one of the two most common species of Rhithrogena.
Male Rhithrogena undulata (Small Western Red Quill) Mayfly SpinnerMale Rhithrogena undulata (Small Western Red Quill) Mayfly Spinner View 13 PicturesThis male was collected at the same time as this female and is likely the same species.

It keys pretty clearly to Rhithrogena undulata using the key in Traver 1935, although the size is larger than expected for that species in that source.
Collected July 1, 2019 from in
Added to Troutnut.com by on July 18, 2019
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