Sorry about the blured pic, he was running very fast and then disapear in the grass.

Estimated size around 6mm.

Not sur because I only use habitus here.

I hesitate with Rhyparochromus, but I didn't find a specie, which matches. With this much white at the apex of abdomen. And this pattern and color on thorax/scutellum/legs.

Maybe Raglius alboacuminatus because of the reddish coloration, even on legs, and the pale first segments of antennas...