First Piestine Rove Beetle in Eocene Baltic Amber (Coleoptera, Staphylinidae, Piestinae)

Fossil piestine staphylinids are extremely rare, with only two definite species known to date. A new rove beetle genus and species, Eopiestus groehni Cai & Lü gen. & sp. nov., is described and figured based on an exceptionally well-preserved adult in Eocene Baltic amber from Yantarny in the Kaliningrad region of Russia. The species is the first fossil piestine discovered as an amber...