Posted by pierred on 20-08-2019 08:33
#1
Hello,
[Click on the picture to get a higher resolution. Click again to come back.]
Pierre Duhem : France : Bessans : 73480 : 29/07/2019
Altitude : 1737 m - Taille : 7-8 mm
Réf. : 237770
I'm rather clueless in front of those flies in great numbers on ombellas in the French Alps. Can somebody help me?
Posted by Nikita Vikhrev on 20-08-2019 11:03
#2
They are Thricops, longipes or nigrifrons