Posted by Sundew on 08-11-2018 14:31
#2
It is difficult to estimate the colour of vertex and occiput... However, this does not help. We need to see more details, compare, e.g.,
https://diptera.i...d_id=55693. There is a key in German in
https://diptera-i...(1988).pdf. It gives a good impression of the characters needed.
Regards, Sundew