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we have a look in the Syrphidae-Gallerie and mean to see
that our fly has a shadow of black tip of the abdomen,
but as you say it is not very clearly.

Here are two fotos from gallerie:

https://diptera.info/photogallery.php?photo_id=1888
https://diptera.info/photogallery.php?photo_id=2871

comments are welcome!!


best wishes


Angelika/Reimund