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Hi,

Here is what I believe to be a male Chaoborus, found less than 100m from a small river, 60km northeast of Paris.



Thierry roy : France : Sablonnières : 77510 : 02/05/2022
Altitude : 110 m - Taille : non mesuré - 10-15mm environ
Réf. : 301585

Thanks for your help,
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Thierry