A taxonomic review of the genera Serica Mac Leay and Nipponoserica Nomura belonging to the subfamily Sericinae in Korea is presented. As a result, four species of the genus Serica induding two new species, S. hirsuta sp. nov. and S. lutea sp. nov., and two species of the genus Nipponoserica including one new species, N. opacicarina sp. nov. are considered to distribute in the Korean peninsula. The keys to the species, descriptions of the three new species and illustrations of adult's morphological characteristics and aedeagi are provided.