#7
Nartshuk and Fedoseeva give lateral views of the 'postgonites' rather than ventral views. Might be a species in the
pratorum group, but examination of the actual specimen with the at hand will be necessary.
#9
I think for some groups within
Meromyza it may be possible to work with pictures like the ones above but in my experience it is quite often necessary to manipulate the genitalia to get the right viewing angle for good comparisson with illustration.