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Male Epeorus (Little Maryatts) Mayfly Dun Pictures



 I hoped this dun would molt into a spinner for a positive ID, but it didn't. My best guess is Epeorus dulciana, but that's only because that's the smallest western Epeorus species, and this specimen is smaller than any of the others, with a body length of 5.3 mm (although it would be longer as a spinner) and a wing length of 8.5 mm.

It was collected at the same time as a similar-sized female dun.


This mayfly was collected from the South Fork Sauk River on July 5th, 2017 and added to Troutnut.com on July 6th, 2017.

Recent Discussions of this Dun

ID on this one?
Posted by Troutnut on Jul 6, 2017
See the caption for the specimen -- I'm thinking Epeorus dulciana based on size and geographic distribution alone, but I can't find any information about how their duns look. Pretty mayfly, though!
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