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Hello kuv,

I mentioned before that i don't know if the black hairs on the scutellum is a reliable feature or not. I don' have a specimen. However, i considered other features along with the scutellum when i suggested B. panzeri. To quote one of my recent posts:

"My determination is based upon the many notes/descriptions that i've read. The most recent document that i've studied is authored by Dr. Merz of Switzerland. The document is written in French but it can be translated using Google translate:
https://www.unige.ch/sphn/Publications/A…2_Merz_62_2.pdf

"In addition, the wings of B. panzeri are often variably browned at the edge and on the vena spuria (midrib of the wing that fades in the middle of the R5 cell) (Fig. 4), but the wings are completely transparent at B. dorsata. This latter character is only found in recent descriptions (from Speight 2008) despite the accompanying drawing of Panzer's description (1798) which clearly shows the partially dark wings."

The darkened wings diagnosis is not contested by Dr. Merz. And clearly the vena spuria and the edges of the wings are darkened on the species in your photos. I think that B. panzeri is a better match. See another photo of B. panzeri with darkened wings at spessart website:
http://www.spessart-fliegen.de/diptera/s…zeri/1/habd.JPG

Jürgen Peters has photos of a Brachyopa sp that fits well with the description of Brachyopa dorsata:
Gute Nacht-Schwebfliege vom 24.04.10 -->Brachyopa dorsata/panzeri

Please review the photos from Jürgen. Notice that the vena spuria is not darkened and the wing edges are clear/hyaline."

I find that the species is a good match for B. panzeri but i am not an expert and i do not yet have a specimen. another quote from one of my posts:

"I hope to find both B. dorsata and B. panzeri to study these features and fortify the descriptions with genitalia."

Best wishes,
John