Ropalopus (Ropalopus) ungaricus occidentalis ssp. nov. is described, illustrated and compared with the other subspecies of Ropalopus (Ropalopus) ungaricus (Herbst, 1784). The new subspecies is close to Ropalopus (Ropalopus) ungaricus ossae Karpiski, Szczepaski Kruszelnicki, 2020. Data about the distribution, habitat and bionomy of the new subspecies and a keys to separation of the subspecies of Ropalopus (Ropalopus) ungaricus are given.