In the process of revising the tachinid genus Linnaemya Robineau-Desvoidy in Korea, we have discovered two species for the first time in Korea. They closely resemble each other and need to be identified with caution. We here provide detailed redescriptions and illustrations with their diagnostic characters indicated. Linnaemya atriventris can be distinguished from L. hirtipennis by the combination of the following characteristics: 1) abdomen black in ground color; 2) wing vein R1 without setulose; 3) hypandrium without secondary posterior lobe; 4) male with antero-basal 1/3 of flagellomere 1 distinctly swollen; and 5) postgonite very weakly curved dorsally.