Taxonomic history of Korean Arctiidae was recently revised by Park (2000), comprising a total of 59 species, 31 genera from South Korea. Subsequently, Choi (2004, 2010) added two more arctiine species, and Bae et al. (2013) enumerated 63 species, 31 genera including one unrecorded species, and Lee et al. (2014) reported one more lithosiine species from South Korea.
In the present study, we report and confirmone rare species, Spilarctia robusta (Leech, 1899), which has been reported by Nam (1985) from Jeju Is., but it has been omitted from the Check List of Insects from Korea (1994), due to that no specieman has been collected after Nam (1985). We found this species from the collection of the Korea National Arboretum (2012), and redescribed with illustrations of genitalic structure. Therefore 65 species of Arctiinae are known to the fauna of Arctiinae from South Korea.

• Bayarsaikhan Ulziijargal(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Sol-Moon Na(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Mu jie Qi(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Yang-Seop Bae(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)