The Attagenus bifasciatus species complex (Coleoptera: Dermestidae: Attageninae) surrounds the Mediterranean and extends into Asia. Several species are recognised but all of them are very similar to each other, and brief, old descriptions do not help to distinguish among them. Here the holotype A. tigrinus (Fabricius) and a syntype series of A. bifasciatus rossii Ganglbauer (subsequently raised to A. rossii) all collected from Italy were dissected to facilitate genital examination. From this genitalic study, Attagenus rossii is placed as a new synonym of A. tigrinus.