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Hello,

There are presently many Bibionidae of different species here in Burgundy.
The most common and biggest one is this one, which I think is Bibio marci.


(Saint Apollinaire, Burgundy - 14 mm long for female, male not measured)

And here is the detail of fore tibia of some female :


Can you confirm B. marci, or are there similar species that can't be distinguished with such photos ?

Thanks for your help ! ;)