New species and barcode analysis of Bethylus Latreille (Hymenoptera, Bethylidae) from South Korea

For the first time, <i>Bethylus</i> Latreille, the type genus of Bethylidae (Hymenoptera, Chrysidoidea, Bethylinae), is reported from the Korean Peninsula based on the discovery of a new species, <i>Bethyluscolligatus</i> <b>sp. nov.</b>, which was collected in Gangwon Province near the Demilitarized Zone. This new species is described and illustrated. A phylogenetic analysis was conducted using mitochondrial cytochrome c oxidase subunit I sequences from common <i>Bethylus</i> species to better understand the evolutionary relationships within the genus. The resulting phylogeny supports the distinction between <i>B.colligatus</i> <b>sp. nov.</b> and other species. Additionally, a key to the species of <i>Bethylus</i> in East Asia is provided.