A taxonomic reappraisal of some species of Korean Oxyporus Fabricius is presented based on morphological and molecular characters (COI and 28S). A new species (O. parvus Lee and Ahn sp. nov.) and a new record (O. procerus Kraatz) are recognized in the Korean peninsula. The new species is superficially similar to O. germanus Sharp but can be separated by the structures of the median lobe of the aedeagus and molecular characters (partial COI and 28S). The minimum interspecific difference between O. parvus Lee and Ahn, sp. nov. and O. germanus (9.3–10.6%) was much higher than the maximum intraspecific difference between O. parvus Lee and Ahn, sp. nov. (2.1%) and they contained 7 and 4 molecular diagnostic characters, respectively. Three previous incorrect identifications are discussed and they (O. basicornis Cameron, O. basiventris Jarrige, and O. crocatus Fauvel) are excluded from the Korean fauna. The molecular analyses support the validity of the new species and the other five Korean species based on morphological characters. Descriptions with illustrations of habitus and diagnostic features of the new species and the new record are provided.

根据形态和分子特征（COI和28S），对大叶红Ox的某些物种进行了分类重新评估。在朝鲜半岛，发现了一个新物种（O. parvus Lee和Ahn sp。nov。）和一个新记录（O. procerus Kraatz）。该新种表面上类似于德国耳香椿（O. germanus Sharp），但可以通过七叶树的中叶结构和分子特征（部分COI和28S）分开。O. parvus Lee和Ahn，sp。之间的最小种间差异。十一月 和德国（9.3–10.6％）远高于O. parvus Lee和Ahn，sp。的最大种内差异。十一月 （2.1％），它们分别包含7和4个分子诊断特征。讨论了以前的三个不正确的标识，并将它们（O. basicornis Cameron，O。basiventris Jarrige和O. crocatus Fauvel）从韩国动物区系中排除。分子分析基于形态特征支持了新物种和其他五种韩国物种的有效性。提供了有关新物种的习性和诊断特征的说明，并提供了新记录。