In the process of revising the tachinid subgenus Linnaemya Robineau-Desvoidy of South Korea, three species are recognized as new to the country: Linnaemya pallidohirta Chao, L. scutellaris (Malloch) and L. lateralis (Townsend). They belong to the oralis species group of the subgenus. L. scutellaris (Malloch) and L. lateralis very closely resemble each other so that they need to be identified with caution. We here provide detailed redescriptions and illustrations with their diagnostic characters indicated.