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Hello Miguel,

I have tried to examine your photos but it is difficult because i cannot see necessary features to aid determination.

The facial keel looks most like Pollenia angustigena of the rudis group. You should verify the amount of ad on t2. P. angustigena usually has one ad, while rudis usually has 2-3 ad on t2. I cannot see more than one ad in your photos. Is this accurate? bear in mind that bristles could be missing. A microscope is best to view the tibia for detection of sockets of any missing bristles.

The ovipositor is not properly dissected to aid identification (see photo attachment of my dissection for reference.) The ovipositors of the rudis group can be quite similar, thus it is very difficult to id a female Pollenia of the rudis group by genitalia alone.

The facial carina is most prominent on rudis (photo 1). When attempting to identify a female Pollenia, especially of the rudis group, one needs to determine if the lateral sacs are sclerotized or not (photo 2) and the spermathecae need to be examined (photo 3). Unsclerotized lateral sacs will lead us away from rudis group.

Keep in mind that the lateral sacs and spermathecae in my photos belong to a female Pollenia rudis. Use these photos for comparison. Pollenia angustigena is not as long and curved as P. rudis. The spermathecae of P. hungarica have noticeable 'handles' (Rognes 1991).

Best wishes,
John