Limacodidae, also known as slug moths, comprise about 1,000 species worldwide (Epstein et al., 1998). This moth group is characterized by two adult characteristics: the presence of the female legs with the recessed pad of sensilla trichodea underneath and the entire, disk-shaped papillae anales, and four characteristics in immature stages: the absence of the crochets in all instars of larvae; the presence of the extended pupal maxilla, contiguous with the labial palpus; the hard, ovoid cocoons, lid invisible when uneclosed; and the flat, thin eggs (Epstein, 1996). Since Fixsen (1887), a total of 19 genera and 26 species of Limacodidae have been recorded from Korea. In the present paper, we reported three species of Limacodidae new to the Korean fauna: Ceratonema butleri Kawada, 1930, Microleon decolatus Sasaki, 2016, and Isopenthocrates japona Yoshimoto, 2004.

• Jae-Cheon Sohn(Institute of Littoral Environment, Mokpo National University, Muan, Republic of Korea)
• Sung-Soo Kim(Research Institute for East Asian Environment and Biology, Yongin, Republic of Korea)
• Sei-Woong Choi(Department of Environmental Education, Mokpo National University, Muan, Republic of Korea)