One fly does not make a summer: The mass flight of mayflies on the River Enz

On Friday, August 21, in the afternoon I received a call for help from the local newspaper in Vaihingen by e-mail: “Can you still be reached today? Yesterday there was a great mayfly spectacle on the river Enz in Vaihingen an der Enz. Perhaps you can enlighten us as to which species it could be?“ […]