in Lasius flavus nest
6mm, with Polyergus rufescens
with Polyergus rufescens, same observation as: https://www.inaturalist.org/observations/205939461
For the ant: https://www.inaturalist.org/observations/169559002
For the other insect: https://www.inaturalist.org/observations/169559003
Fundet på græseng, måske bille. Havde vinger og fløj rundt.