Opostegidae is a microlepidopteran family (Lepidoptera: Nepticuloidea) that includes almost 190 species belonging to eight genera worldwide. Since Shin recorded Opostegoides Kozlov in Korea, only two species of the genus have been recorded in Korea among the family. We found the genus Pseudopostega Kozlov, 1988 from Gangwon-do Jeongseon. This study reports the genus Pseudopostega Kozlov, 1985, for the first time. Illustrations of adult and genitalisa are also provided.

• Dae-Kyeong Ra(Lab. of Insect Phylogenetics and Evolution, Department of Plant Protection & Quarantine, Jeonbuk National University) Corresponding author
• Sora Kim(Lab. of Insect Phylogenetics and Evolution, Department of Plant Protection & Quarantine, Jeonbuk National University, Department of Agricultural Convergence Technology, Jeonbuk National University)