Discovery of the male of Okinawepipona yty Nguyen, 2018 (Hymenoptera: Vespidae: Eumeninae) from Vietnam Author Nguyen, Hieu Van Faculty of Biology and Agricultural Engineering, Hanoi Pedagogical University 2, 32 Nguyen Van Linh Street, Phuc Yen city, Vinh Phuc province, Vietnam Author Nguyen, Manh Thanh Institute of Ecology and Biological Resources (IEBR), Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam Author Nguyen, Lien Thi Phuong Institute of Ecology and Biological Resources (IEBR), Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam & Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam text Zootaxa 2024 2024-01-10 5399 1 79 84 http://dx.doi.org/10.11646/zootaxa.5399.1.6 journal article 10.11646/zootaxa.5399.1.6 1175-5326 10494478 8B269581-73B6-472C-8379-C1367767D24F Okinawepipona curcipunctura Nguyen & Xu, 2014 Figs. 8–10 Okinawepipona curcipunctura Nguyen & Xu, 2014: 41 , 42, 44 (key), male – “ Guangdong , Nanling National Nature Reserve” (SCAU). This species is known only from the type locality in China . FIGURES 5–10 . Okinawepipona yty Nguyen, 2018 , male ( 5–7 ) and Okinawepipona curcipunctura Nguyen & Xu, 2014 , male ( 8–10): 5, 8 Genitalia, inner aspect of paramere with volsella and digitus 6, 9 Aedeagus, ventral view 7, 10 Aedeagus, lateral view. Scale bars = 1 mm. Genitalia .As in Figs. 8–10 . Parameral spine lacking setae. Volsella flattened, spatulate, wide on inner aspect, and without setae at top ( Fig. 8 ). Digitus knife-shaped, almost parallel at one-third from base, then gradually narrowing to top, with medium long setae on outer margin ( Fig. 8 ). Penis valves of aedeagus long, about 1.7× as long as basal apodeme, in ventral view proximal part produced laterally into a round lobe, lobe gradually narrowing at inner margin apically ( Fig. 9 ); in profile apical part produced into a pointed projection ( Fig. 10 ); dorsal rod of aedeagus longer than basal apodeme apically ( Fig. 10 ).