A new Vietnamese species and a key to the Oriental species of Pareumenes (Nortonia) de Saussure, 1855 (Hymenoptera: Vespidae: Eumeninae) Author Nguyen, Lien Thi Phuong text Raffles Bulletin of Zoology 2020 2020-06-29 68 588 594 journal article 10.26107/RBZ-2020-0074 2345-7600 5345178 3DA09D0A-DD6D-42FA-8D06-0899FB9D94BE Genus Pareumenes de Saussure, 1855 Pareumenes de Saussure, 1855 , Ét. Fam. Vesp. 3: 133, division of genus Eumenes Latreille. Type species. Eumenes quadrispinosus de Saussure, 1855 , by subsequent designation of Bequaert, 1918 , Bulletin of the American Museum of Natural History, 39: 271. Figs. 1–6. Pareumenes caoduong , new species , holotype, female. 1, Head in frontal view; 2, Vertex in dorsal view; 3, Mesosoma in dorsal view; 4, Mesosoma in lateral view; 5, Propodeum in posterior view; 6, Tergum I in dorsal view. Scale = 1 mm. Diagnosis. According to van der Vecht (1963) and Tan et al. (2018) , the diagnosis of the genus Pareumenes is as follows: Mesoscutum with prescutal furrows. Propodeum with epicnemial carina absent, the transition from dorsal to lateral areas sharply marked, produced into a more or less distinct spine or tooth near apex; dorsal area at base with fovea or longitudinal slit, from which runs a median carina to the apex; first gastral sternite more or less gradually widening from base to apex, rather regularly transversely striate. Metasomal segments more or less distinctly petiolate, the first segment always longer than its width at the apex. Mid tibiae with one apical spur. Outer side of hind tibiae with a variable number of short spines. Female head with cephalic fovea. Forewing with parastigma longer than the stigma.