Posted by Nosferatumyia on 17-04-2019 14:23
#4
In fact, both occur there in Hungary, Austria, and neighbouring countries, differing by the wing pattern slightly (and
this may overlap), but I have no experience enough to ID with 100% certainty (we have only one of them here and rarely occurring). Male surstyli and female spermathecae are the only solid characters, but not visible on photos.