Posted by Jan Willem on 25-01-2020 23:25
#3
Difficult to say without studying sternite 8. However, in
G. balachowskyi the abdomen is in most cases clearly banded. It is, again in most cases, black in
G. hackmani. Also the post-scutellum is normally less dark in
G. balachowskyi. So I would say
Geomyza cf. hackmani.