Abstract: Kadri Kiran & Nihat AKTAÇ Dr. Kadri Kiran (contact author), Prof. Dr. Nihat Aktaç, Trakya University, Faculty of Arts and Sciences, Department of Biology, 22030 Edirne, Turkey. E-mail: kadrikiran@trakya.edu.tr; nihata@trakya.edu.tr Myrmecol. News 10: 110 Turkey is zoogeographically very heterogeneous. Nearly 300 ant species are known, but information on parasitic species is still sparse. Since the first recording of socially parasitic ant species from Turkey, by Santschi (1921), 17 permanent and 17 temporary social parasite species have been recorded among the Turkish ant fauna. In Turkey, Plagiolepis Mayr, 1861 is represented by five independent taxa (P. ancyrensis Santschi, 1920, P. pallescens pallescens Forel, 1889, P. pallescens ssp. maura Santschi, 1920, P. pygmaea (Latreille, 1798), and P. taurica Santschi, 1920 (= vindobonensis Lomnicki, 1925)) and by two inquiline species (P. ampeloni (Faber, 1969) and Plagiolepis sp.). In this study, we report the social parasite Plagiolepis xene STÄRCKE, 1936 for the first time in…