Two sibling species of the genus Monopis Hübner are collected in Jeju Island, with one of them reported for the first time from Korea. The genus currently comprises approximately 100 named species, which are widespread and diverse throughout the Old World, but poorly represented in the New World. Many species of the genus Monopis have been reported in bird nests, feces, and wool products. The larvae of these moths feed on keratin and chitin sources, such as feather, pellet and guano. The adults are briefly described, illustrated and compared, including the male and female genitalia.

• Dong-June Lee(Department of Life Sciences, Incheon National University)
• Bo-Sun Park(Department of Life Sciences, Incheon National University)
• Jae-Won Kim(Department of Life Sciences, Incheon National University)
• Tak-Gi Lee(Department of Life Sciences, Incheon National University)
• Hyung-Kyu Kim(Department of Life Sciences, Incheon National University)
• Yang-Seop Bae(Department of Life Sciences, Incheon National University Bio-Resource and Environmental Center, Incheon National University)