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I try a new identification :

For me, the tubercle is maybe absent I don't know why.
It's not a Tabanus because it's not the coloration of nemoralis (abdomen and antenna).
It's not (for me) an Atylotus (face too dark and other criteria).
If I look to the genus Hybomitra it could be on bimaculata group.
It can't be bimaculata who have all facets on the same size. It's not solstitialis because the notopleural lobe is dark.
we have yellow hairs on the edge of the first tergite so it could be distinguenda.

The palpi iare really long, not globular and pointed > 2x long than large. all species of bimaculata group have globular palpi so I don't know !!