﻿AbstractThe European species of the potter wasp genusEumenesLatreille, 1802 (Vespidae,Eumeninae) are illustrated and a new illustrated key to the 13 recognised species is presented.EumenesmediterraneusaemilianusGuiglia, 1951 is synonymised withE.papillarius(Christ, 1791) (syn. nov.),E.obscurusAndré, 1884 andE.andreiDalla Torre, 1894 withE.pedunculatus(Panzer, 1799) (syn. nov.) andE.crimensisBlüthgen, 1938 withE.sareptanusAndré, 1884 (syn. nov.).