Entomacis, a moderately sized parasitic wasp genus within Diapriidae, consist of 56 species in the world. In East Asia, 11 species are recorded from Japan, 6 species from South Korea and Russia and 4 species from China. In this study, two newly recorded species of the genus Entomacis Förster, 1856 (Hymenoptera: Diaprioidea: Diapriidae), E. laticeps Chemyreva, 2015 and E. penelope Nixon, 1980, are reported from South Korea. A revised identification key to the South Korean species, diagnosis, illustrations and photographs of the diagnostic characteristics are provided herein

Diapriidae are the largest family in Diaprioidea with 2,087 species, 194 genera and three subfamilies that are distributed in all biogeographic regions. Most members of the family are primarily solitary or gregarious endoparasitoids of various dipteran larvae or pupae. Some species are also known to attack hymenopteran, coleopteran and lepidopteran species. To date 18 species in total are known from South Korea. We present an updated checklist of 18 South Korean species of Diapriidae, with correcting some errors previously made. New Korean names for each species are also suggested herein.

한국산 미기록속인 낫어리염주벌속(Psilomma Förster) (신칭)과 미기록종인 낫어리염주벌(Psilomma dubium Kieffer) (신칭)을 처음으로 보고한다. 그에 따라 본 속을 동구북구 지역에 최초로 보고한다. 재기재문 및 주요 형질에 대한 사진을 함께 제시한다.

Psilomma Förster, a small and rare genus within the tribe Pantolytini (Diapriidae: Belytinae), consists of three species widely distributed in Europe: P. dubium Kieffer, 1908; P. fuscicornis Kieffer, 1908; P. fusciscapis Förster, 1861 (Macek 1990). This genus is easily distinguished from other Pantolytini genera by the sickle form of mandibles. Up to date, Psilomma has not yet been recorded out of Europe. As a result of the present study, the genus Psilomma is reported from the South Korea for the first time based on a species of P. dubium. Also, the known range of Psilomma is extended from Europe (Western Palaearctic) to South Korea (Eastern Palaearctic). A detailed redescription, photographs of this species are given.

금번연구를 통해 Lepidopria속 및 Tetramopria속의 3신종 [Lepidopria masneri sp. n., Tetramopria tortilis sp. n. 및 Tetramopria turbinata sp. n.]이 기재된다.