Can someone help me identify this queen ant?
The small space between the thorax and the abdomen indicates this queen has only one petiole segment (no post-petiole). The large size and absence of an elongated first abdominal segment indicates the subfamily Formicinae. The morphological features necessary to go further with a formal identification are not visible, but from the general aspect of the ant it is likely to be a Lasius or a Formica.

See ref below:


  Seifert, Bernhard. Die Ameisen Mittel-und Nordeuropas. Lutra Verlag-u.
  Vertriebsges., 2007.