I found this ant in a garden.
At first I that thought that it was Formica fusca, but she seems a little bit to small for that.
That is a Dendrolasius fuliginosus worker.
Regards
Kaj
Oke, now I know.
Thanks
She was bigger and darker then a Lasius n iger worker so thats why I thought it was Formica f usca, but now I have a Formica s anguinea colony with Formica f usca slave workers I realized that she doesn't looks like Formica f usca at all.