Atheta (Chaetida) longicornis (Gravenhorst, 1802)
Family: Staphylinidae
Size: 3.1 mm (3.0 to 3.5 mm)
Origin: Europe
Ecology: The beetle is mainly found in dung and rotting plant material
Location: Germany, Bavaria, Upper Franconia, Selbitz/Rodesgruen
leg.det. U.Schmidt, 26.VI.2002
Photo: U.Schmidt, 2020

Atheta longicornis  (big picture)

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Atheta longicornis  (Wikimedia Commons)