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Thank you very much. I am starting to orient myself in the number of numerous pictures from this location.

And, what do you think about lessonae (M.P.Vien 4.b. Tergite 2: spots triangular, increasing in width to cover almost the entire length of the side margin, margin itself black in front, yellow in hind part -> Chrysotoxum lessonae)? Is this accepted species? And could it appear like this specimen?