gray mayfly with black wing border - Callibaetis skokianus
Cardinal Marsh, Winneshiek County, Iowa, USA
August 15, 2020
Size: ~11 mm
After checking out the possibilities of what this mayfly might be on BugGuide's Ephemeroptera pages, I think I found a perfect match in Callibaetis skokianus. I don't know much about mayflies though so I'd like an expert's opinion.
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