A new species and a new record species of Megischus Brulle (Hymenoptera, Stephanidae) from Vietnam Author Ge, Si-Xun https://orcid.org/0000-0003-3769-1530 College of Forestry, Beijing Forestry University, Beijing 100083, China Author Ren, Li-Li College of Forestry, Beijing Forestry University, Beijing 100083, China lily_ren@bjfu.edu.cn Author Tan, Jiang-Li Shaanxi Key Laboratory for Animal Conservation / Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, 229 North Taibai Road, Xi' an, Shaanxi 710069, China tanjl@nwu.edu.cn text Journal of Hymenoptera Research 2023 2023-09-11 96 723 734 http://dx.doi.org/10.3897/jhr.96.107502 journal article http://dx.doi.org/10.3897/jhr.96.107502 1314-2607-96-723 ECF92C76DDDD4FBDB379139EEC430CDE 22BAF12EF7AA5209AB8CB8B59C69216B Genus Megischus Brulle , 1846 Megischus Brulle , 1846: 537. Type species (designated by Viereck 1914): M. annulator Brulle , 1846 [= M. furcatus (Lepeletier & Serville, 1825)]. Megischus Brulle , 1846: van Achterberg 2002 : 53-168; Aguiar and Johnson 2003: 469-482. Bothriocerus Sichel, 1860: 759. Type species: Bothriocerus europaeus Sichel, 1860 (by monotypy) (= Stephanus anomalipes Foerster, 1855, according to Madl 1991). Diagnosis. Medium to large size. First subdiscal cell comparatively narrow basally, approximately as wide as the first discal cell or narrower; vein M+CU1 with four short, erect, equidistant spiny setae; veins 1-M and 2-SR straight or nearly so. Dorsal tooth of hind coxa absent; hind femur with two distinct teeth; hind tibia narrowed basally and inner side usually with wide sub-medial depression, without oblique striae or rugae on outer side; hind tarsus of females with three tarsomeres. Ovipositor sheath with distinct ivory subapical band. Distribution. Cosmopolitan.