The Chrysomelid species of the genus Xanthogaleruca, X. aenescens Fairmaire, 1878 is reportd for the first time from South Korea. The genus Xanthogaleruca Laboissiére, 1934, within subfamily Galerucinae, contains only nine species, and is distributed Palearctic region (Beenen, 2010), but one adventive species, X. luteola (Müller, 1766), is widespread throughout much of Canada, North Africa and the United States. Also known as the elm leaf beetle, it feed on Ulmus (Ulmaceae). In the present study we report on the genus Xanthogaleruca Laboissiére, 1934 from Korea for the first time, based on X. aenescens Fairmaire, 1878. We provide the habitus photographs, illustrations of diagnostic features and a key to the genus in S. Korea.