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The genus Lissocnemis Kohl, 1907 of the subfamily Ctenocerinae is recorded from Korea for the first time. The diagnosis and characteristics of the genus, description of a new species, L. koreana Kim & Shimizu sp. nov. and redescription of another species, L. brevipennis hitherto known from Southeast Asia and Japan, are presented. The biogeographical distribution of the genus is discussed. Cryptosalius Turner, 1917 (type species: Pseudagenia rava Bingham, 1896; in part) and Dinagenia Banks, 1934 (type species: D. apollo Banks, 1934) are synonymized with Lissocnemis and the following new combinations are made: Lissocnemis tonkinensis (Turner, 1920) comb. nov. (= Cryptosalius tonkinensis Turner, 1920); Lissocnemis apollo (Banks, 1934) comb. nov. (= Dinagenia apollo Banks, 1934); and Lissocnemis satyrus (Banks, 1938) comb. nov. (= Dinagenia satyrus Banks, 1938). Lastly, L. satyrus (Banks, 1938) and L. nigricoxis Haupt, 1941 are rendered to be junior synonyms of L. apollo (Banks, 1934) comb. nov.

The taxonomic validity of Dolichovespula kuami, especially in relation to D. flora, has been the subject of a long-term debate. Herein, the valid specific status of the former was supported through an integrated analysis of morphological characters and DNA barcodes. The pronotal rugae and male genitalia of the two species are different, and partial mitochondrial genes (cytochrome oxidase subunit I, COI) indicate that they form significantly distinct lineages. The hitherto unknown male of D. kuami is described for the first time, and a brief discussion of the D. maculata species group is provided. [ABSTRACT FROM AUTHOR]