Аннотация:HEBIUS ATEMPORALE (Tonkin Keelback). VIETNAM: NGHE AN PROVINCE: Con Cuong District: Pu Mat National Park (ca. 18.91477°N, 104.77373°E; WGS 84), 950 m elev. 25 August 2018. T. V. Nguyen. Verified by Gernot Vogel. Herpetological Collection, Duy Tan University (DTU 515; photo voucher). Individual found at ca. 1630 h on ground; surrounding habitat consisted of secondary evergreen forests, with dense shrubs. First record for Nghe An Province (Nguyen et al. 2009. Herpetofauna of Vietnam. Edition Chimaira, Frankfurt AM, Germany. 786 pp.), currently the southernmost distribution limit known, ca. 430 km SSE from the nearest known population in Muong Nhe Nature Reserve, Muong Nhe District, Dien Bien Province, northwest Vietnam, from where it was reported as Rhabdophis nuchalis (see Le et al. 2014. J. Biol. 36:460–470). Species also known from southeastern China and northern Vietnam (Malnate and Romer 1969. Proc. Acad. Nat. Sci. Philadelphia 424:1–8).