Ephemeroptera

https://www.scientificlib.com/en/Biology/Animalia/Arthropoda/Insects/Ephemeroptera.html

as the River Test in Hampshire are named "The Mayfly".[77][78][79] As a spectacle The hatch of the giant mayfly Palingenia longicauda on the Tisza and Maros Rivers in Hu
Ephemeroptera , Online Biology, Biology, Science

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