Thread subject: Diptera.info :: Diptera (Stevenia sp) pictured in Belgium on 2021-08-12 for ID

Posted by Tetrao on 12-08-2021 17:17
#1

I pictured this Diptera in Belgium, on 2021-08-12.
I searched to ID it using wing venation but could not ...
Can you help me ID it ???
Thank you very much !

observations.be/media/photo/41043860.jpg

observations.be/media/photo/41043861.jpg

observations.be/media/photo/41043862.jpg

observations.be/media/photo/41043863.jpg

observations.be/media/photo/41043864.jpg

observations.be/media/photo/41044097.jpg

Edited by Tetrao on 13-03-2022 17:23

Posted by Sundew on 13-08-2021 00:15
#2

The wing venation points to Rhinophoridae, as cell r4+5 is distinctly petiolate (this character is found also in Tachinidae, but they look different). The long petiole is typical for genus Stevenia, but that's it I'm afraid... The key in https://www.mapre...24p041.pdf asks for characters that are not clearly visible in your pictures. S. deceptoria bears a certain resemblance as to conspicuous dusting but should have reddish palpi and a reddish tip of the second antennal segment. So let's stay with Stevenia spec.
Regards, Sundew

Posted by Tetrao on 13-08-2021 07:09
#3

Thank you very much for all these comments very interesting !!!
I already met Stevenia deceptoria I'll have a look at the key and if I have picture with the details !
Thank you again ,
Have a good day,
Didier