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Photo#1110951
Callibaetis? - Callibaetis

Callibaetis? - Callibaetis
along Hwy 88 near Praag, Buffalo County, Wisconsin, USA
July 26, 2015
Came to my UV moth lights. This is the smallest mayfly I've seen. I didn't measure it, but I think it was between 10 and 15mm long.