The genus Miaenia Pascoe, 1864 (Coleoptera Cerambycidae) in Korea is taxonomically reviewed in this study. Miaenia was erected by Pascoe (1864) based on the type species M. marmore. Miaenia has been accepted as a subgenus of Sciades for a long time, howerer, Roguet (2012) considered Sciades as a synonym of the genus Miaenia.
Previously, two species, M. fasciata fasciata (Matsushita, 1943) and M. maritima Tsherepanov, 1979, of the genus have been reported in South Korea.
In this paper, M. tonsa (Bates) is recorded in Korea for the first time. A key to the Korean Miaenia species, diagnoses, illustrations of diagnostic including male genitalia are provided.

• Ik Je Choi(Division of Forest Biodiversity, Korea National Arboretum)
• IL-Kwon Kim(Division of Forest Biodiversity, Korea National Arboretum)
• Jong Woo Nam(Division of Forest Biodiversity, Korea National Arboretum)
• Young Min Shin(Division of Forest Biodiversity, Korea National Arboretum)
• Jong Kyun Park(Department of Ecological Science, Kyungpook National University)
• Jongok Lim(Division of Forest Biodiversity, Korea National Arboretum)