One new species of Adela Latreille, [1796], A. palella Koo Cho, sp. nov., belonging to Adelidae is described from Korea, and one species of Coleophora Hbner, 1822, C. fuscocuprella Herrich-Schffer, 1855, belonging to Coleophoridae is reported for the first time. Diagnostic characters and descriptions are provided along with close-up photographs of notable features of adults.