This dun hatched in my aquarium on July 16th from an easily identified nymph collected on July 10th, and it molted into a spinner after I photographed it. The beautiful spinner form is listed as separate specimen. I forgot to photograph the dun with the ruler, but naturally his size is pretty similar to what it was as a spinner.
This mayfly was collected from Nome Creek on July 10th, 2011 and added to Troutnut.com on July 16th, 2011.
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