can anyone help me identify this ant queen, if it's an ant queen? I only assume it is because I caught another with wings which looks exactly the same. Thanks in advance..
There is only one segment between the thorax and the abdomen and the first segment of the abdomen is not elongated, which indicates this is a Formicinae.
Because the head width is similar to the thorax width from top view, this likely corresponds to a social parasite ant from the genus Lasius.
See ref below:
Seifert, Bernhard. Die Ameisen Mittel-und Nordeuropas. Lutra Verlag-u. Vertriebsges., 2007.