Posted by Cortmeyer on 10-08-2019 18:17
#1
Hello,
I saw these flies 8.8.19 on leafes of Hydrangea. It was a kind of dancing as You see. the flies wer not more than 5 mm. In Frankfurt am Main, Germany.
Greetings Chris
Edited by Cortmeyer on 14-08-2019 21:47
Posted by Tony Irwin on 11-08-2019 22:02
#4
I would say Milichiidae - I think the behaviour has been noted before, but I can't find any reference to it at present.