Goniozus Förster which is belonging to the subfamily Bethylinae (Hymenoptera: Bethylidae), are one of the large genera, and consist of approximately 170 species worldwide. Most members of Goniozus are ectoparasitoids of immature stages of microlepidopteran families, mainly Gelechiidae, Pyralidae and Tortricidae. As a results of this study, a total of five species of the genus Goniozus are recognized in Korea, which includes two new species, two newly recorded species and a previously recorded species. Diagnosis and illustrations for each species are presented.

• Jongok Lim(Entomology Program, Department of Agricultural Biotechnology, Seoul National University)
• Sanghyun Koh(Division of Forest Insect Pests & Diseases, Department of Forest Conservation, Korea Forest Research Institute)
• Seunghwan Lee(Entomology Program, Department of Agricultural Biotechnology, Seoul National University)