Three new species of the genus Arge (Hymenoptera: Symphyta: Argidae) from South Korea with key to species of the subfamily Arginae

Three new species, Arge koreana Wei & Lee sp. nov. from South Korea, Arge pseudorejecta Wei & Lee sp. nov., and Arge shengi Wei & Lee sp. nov. from South Korea and China are described. Keys to known genera of Argidae and known species of Arginae from South Korea are provided.