Species of the genus Streblocera Westwood are reviewed with four new species from Vietnam described and illustrated, viz. Streblocera (Eutanycerus) intermedia Long, sp. n.; S. (E.) quangbinhensis Long, sp. n.; S. (E.) trangana Long & Pham, sp. n.; and S. (E.) tuyenquangensis Long, sp. n.. A key to Vietnamese species of the subgenus Eutanycerus is provided.

The genus Leptophion is recorded for the first time from Vietnam, including new records of three species, viz. L. giganteus Shimizu & Watanabe, L. maculipennis (Cameron) and L. radiatus (Uchida), for the country. The comparative morphological and pictorial characters of Vietnamese specimens were given. In addition, variations and in-country distribution of newly recorded species were also provided.

Two species of the genus Acropimpla, viz. A. bicarinata (Cameron) and A. uchidai (Cushman), are recorded for the first time from Vietnam. An updated,  illustrated key to all eight Vietnamese species of Acropimpla is provided.

ABSTRACT:The ichneumonid fauna of Vietnam has been studied since the early 20 th century, but records of this large insect group were published in scattered papers. In this paper ichneumonid wasps from Vietnam are reviewed and a checklist of published species with local and world distribution is provided. Up to now, 246 ichneumonid species in 87 genera of 18 subfamilies have been recorded from Vietnam. Of this number, one genus and no fewer than 70 species were described on the basis of material collected from Vietnam. In the checklist, valid names, first citation, holotype deposition and synonyms that used previously in Vietnam are provided. In addition, ten species are recorded for the first time from Vietnam, viz. Acerataspis clavata (Uchida, 1934) (Cameron, 1897). Specimens of the aforementioned ten species are currently deposited at Institute of Ecology and Biological Resources (IEBR), Ha Noi, Vietnam. Additionally, host information is available for 25 species that are parasitoids of agricultural pests. This paper provides useful information for further studies on one of the largest hymenopteran families of Vietnam.

Based on the material collected from the field surveys in 2017–2018, we report the first list of lepidopteran insects from the Trang An Landscape Complex, Ninh Binh Province. A total of 167 species including 62 butterflies and 105 moths have been recorded, in that two species, Celerena signata Warren, 1898 and Nygmia plana (Walker, 1856) are recorded for the first time from Vietnam.