Arpedium  quadrum (Gravenhorst, 1806)
Family: Staphylinidae
Size: 5.0 mm (4.5 to 5.5 mm)
Distribution: Europe, Siberia
Ecology: Lives in moist habitats
Location: Germany, Bavaria, Upper Franconia, Selbitz, Foehrig
leg. det. U.Schmidt, 2.IV.2000
Photo: U.Schmidt, 2015

Arpedium quadrum  (Flickr)