identify this ant queen
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.