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So.. after checking Chvála´s paper

Chvala, M. (1970). Revision of Palaearctic species of the genus Tachydromia Meig.(= Tachista Loew)(Diptera, Empididae). Acta Entomologica Musei Nacionalis Pragae, 38(1969), 415-524.)

I think the species is T. annulimana.
Thank you both again!

Helge