Lomechusa emarginatus (Paykull, 1789)
Family: Staphylinidae
Size: 4.5 mm (3.5 to 4.5 mm)
Distribution: Europe
Ecology: Lives with ants
Location: Italy, South Tyrol, Schnals, Karthaus, 1000 m
leg.det. G.Roessler, 24.III.1977
Photo: U.Schmidt, 2015

Lomechusa emarginatus  (big picture)

Lomechusa emarginatus  (Flickr)

Lomechusa emarginatus   (Wikimedia Commons)