Curculio omogeron Herbst, 1797 valid species in genus Xanthochelus Chevrolat, 1872, from homonym of C. omogeron Lichtenstein, 1796 . The latter name was published in a paper that has been suppressed for nomenclatural purposes (Opinion 1820 by the International Commission on Zoological Nomenclature). As a consequence, since Art. 23.9 cannot be applied, Xanthochelus ewersmanni (Fåhraeus, 1842) becomes a synonym of

Xanthochelus omogeron (Herbst, 1797) syn. n.