The Eurytoma appendigaster species-group is a second large group within the genus Eurytoma Illiger found in the Palearctic region. This group comprises 44 species by Zerova, but in Korea, only one species, E. appendigaster (Swederus), has been previously reported. They are well-known for their predation on phytophagous insects, mainly the genus Tetramesa which is belonged to the family Eurytomidae and associated with grasses (Poaceae). In this study, we report seven species of the appendigaster species-group from Korea for the first time. Also, key to Korean species of appendigaster species-group and photos of diagnostic characteristics are provided.

Eurytomidae Walker, 1832 are relatively medium-sized group in the superfamily Chalcidoidea with approximately 1600 species of three subfamilies and 73 valid genera. In Palearctic region, more than 600 species have been recorded, and only 11 species are recorded in South Korea. In this presentation, we report 21 eurytomid species including one subfamily, three genera and 10 species new to South Korea.