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Photo#1929426
gray mayfly with black wing border - Callibaetis skokianus - female

gray mayfly with black wing border - Callibaetis skokianus - Female
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.

Images of this individual: tag all
gray mayfly with black wing border - Callibaetis skokianus - female gray mayfly with black wing border - Callibaetis skokianus gray mayfly with black wing border - Callibaetis skokianus gray mayfly with black wing border - Callibaetis skokianus

Moved
Moved from Mayflies.

Callibaetis skokianus
Hi Larry-

Yes, I believe this female imago to be Callibaetis skokianus.

 
Callibaetis skokianus
That's fantastic news, Roger! Thanks again for your expertise in helping me figure out what mayflies I've found! I'm slowly starting to learn the different mayflies in my area.