Two species of the genus Cosmophorus (Hymenoptera: Braconidae) are reported in this study. Members of Cosmophorus are known as solitary koinobiont endoparasitoids of adults of barkboring and woodboring Scolytidae. The genus Cosmophorus of the subfamily Euphorinae is small in the size and enigmatic in the ecology, which has been recorded in Holarctic, Oriental, Afrotropical and Australian regions. Only five species are known in East Palaearctic. Among them, Cosmophorus (Cosmophorus) klugii Ratzeburg is new to Korea. Diagnosis and distribution data are included.

본 연구를 통해 2종의 큰턱고치벌속(벌목, 고치벌과)을 보고한다. 수원큰턱나무좀고치벌 Cosmophorus (Cosmophorus) klugii Ratzeburg 1종 은 한국미기록종으로 보고한다. 식별형질과 분포 등의 정보를 포함하였다.