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Hello Kuv & John,

I would not identify the species from these photo's. Also in this post: https://diptera.i...ost_385532
I've taken the Dutch material of both species in my collection and compared them. Based on the male specimens and their terminalia I can accurately pinpoint the correct species. The only reliable external feature is the size of the sensory pit on the third antenna segment. Both species have scutellar bristles. Those of B. panzeri are paler than those of B. dorsata. But the bristles can be very short and from these photo's very difficult to see.
I'd say B. dorsata/panzeri, in both posts.

Kind regards,
Ectemnius