GAMMARUS KOMAREKI SCHAFERNA, 1922 (PERACARIDA, AMPHIPODA), A NEW AMPHIPOD SPECIES FOR THE ROMANIAN FAUNA, WITH REMARKS ON ITS BIOGEOGRAPHY

This paper documents the presence of Gammarus komareki Schaferna, 1922 in Romania for the first time. Twenty two individuals were collected from a stream in south western Dobrogea (south eastern Romania) Some notes regarding the ecology of this species are given. Its biogeography is discussed within a palaeogeographic and phylogenetic context. Regarding the actual distribution and recent molecular phylogenetic studies, it appears that Gammarus komareki has originated in the Oligocene of the Eastern Paratethys. Drawings depicting the morphology of the Romanian specimens are provided.