This dun emerged on my desk from a container of nymphs I was sorting, so I was able to get an ID from the nymphs. I also uploaded photos of a female nymph and a male nymph.
This mayfly was collected from the Yakima River on April 9th, 2021 and added to Troutnut.com on April 11th, 2021.
I took this scale shot after preserving the specimen in alcohol already, so it's wrinkly.
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