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Hello,

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Pierre Duhem : France : Saint-Leu-la-Forêt : 95320 : 24/06/2025
Altitude : 187 m - Taille : 3-4 mm
Réf. : 363281

In the gallery, Nikita says that Cetema cereris is characterized by a white arista and white hairs on sternites 1 and 2. We can't see this criterion on my picture. But one can also see that the scutellar setae are clearly black.

In France, according to TaxRef, we could have 5 different species.

Is it possible to bring some logic to this?
Thanks in advance.