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Hello,

I have this male, caught near a lake in western France.
First of all, I'm not sure about the genus...
Eyes clearly haired, no tubercle on vertex between eyes like in Hybomitra.
In north western France, if it's a Tabanus it's nemoralis (upper eye facets clearly enlarged) but antenna are yellow (black in nemoralis). Colour of eyes seem to be not as Atylotus (dark here).
So an Hybomitra for me.
- Long hairs on first antennal segment.
- Angle between lower margins of eyes : 90°
- bimaculata have facets of same size
- Upper facets clearly larger than lower facet muehlfedli excluded and distinguendahave yellow hairs on first tergite, blak here) = solstitialis













Benoît