The genus Margarinotus Marseul, 1854 is one of the highly diverse groups of Histeridae (Histerinae), consisting more than 100 described species in the world. About 80 species are known to distributed in Palaearctic region, among them, 11 species have been reported from Korea. In this study, we report a new species, Margarinotus pseudoboleti sp. nov. and a new record, Margarinotus yezoensis Ôhara from Korea. Also, we provide a revised taxonomic key for Korean Margarinotus, including above two species and images of adults.

• Jinbae Seung(Laboratory of Insect Biosystematics, Department of Agricultural Biotechnology, Seoul National University, Research Institute of Agriculture and Life Sciences, Seoul National University) Corresponding author
• Seunghwan Lee(Laboratory of Insect Biosystematics, Department of Agricultural Biotechnology, Seoul National University, Research Institute of Agriculture and Life Sciences, Seoul National University)