The first record of Ptyas nigromarginata (Blyth, 1854) from Thailand and a new record from China are reported. Literature and internet sources were searched for previous records of this species to establish its geographic and altitudinal distributions in Asia. The distribution in India was adapted to the new state division of the northern part of the country. The results show that the species almost exclusively occurs in hill evergreen and montane forests of the Himalayan foothills and mountain ranges continuous with it, at altitudes of 1000–2300 m above sea level. Leer más.