Twelve species of the genus Yponomeuta Latreille belonging to the family Yponomeutidae in Korea are recognized. Among them, four species, Yponomeuta kanaiellus Matsumura, Y. montanatus Moriuti, Y. sociatus Moriuti, and Y. yanagawanus Matsumura, are reported for the first time from Korea. Adults and genitalia of newly recorded species are illustrated. General biology with host plant records is reviewed for each species. A key to all known species in Korea, based on the external characters, is provided.

• Byun, Bong-Kyu(Korea National Arboretum)
• Bae, Yang-Seop(Department of Biology, University of Incheon)