Trimeresurus albolabris (Gray, 1842)

Etymology: from albus (“white”) and lābrum (“lip”), refers to the white line present on the holotype (China).

Trimeresurus albolabris – in situ – Inde Credit: Hiren Kathri


  • Top lips: Often yellow or yellow-white, sometimes green
  • Facial line: starts under the eye, white, sometimes difficult to see
  • Body line: white, sometimes white, sometimes yellow-white
  • Lips and chin: yellow, sometimes green
  • Tail: the red-brown line start above the tail
  • Body: light green
  • Ventral: green or yellow
  • Breeding: vivipare
  • Hemipenes: long papillose


DL50: 3.3 mg/kg by the weight of the body mouse (Duan, H. L., He, Q. Y., Zhou, B., Wang, W. W., Li, B., Zhang, Y. Z., … & Yu, X. D. (2016))


Found in northern India (Assam and Jharkhand), Nicobar Islands, Bangladesh, Myanmar, Thailand, Cambodia, Laos, Vietnam, southern China (Fukien, Hainan, Kwangsi, Kwangtung ), Hong Kong, Philippines, West Malaysia, Indonesia (Sumatra, Borneo, Sulawesi, Java, Madoera, Lombok, Sumbawa, Komodo, Flores, Sumba, Roti, Timor, Kisar, Wetar). The given type locality is “China”.

Trimeresurus albolabris appeared about 7.15 million years ago, originating from northern Thailand and eastern Myanmar. They would then have first migrated from north to south, then from west to east. The white lip viper would, according to the study, be a monophyletic species, with five geographically structured lineages.

(ZHU, Fei, LIU, Qin, CHE, Jing, et al., 2016)


  • Trimeresurus albolabris - Credit: Maxime Goineau
    Trimeresurus albolabris - Credit: Maxime Goineau


Malhotra, A., & Thorpe, R. S. (2004). A phylogeny of four mitochondrial gene regions suggests a revised taxonomy for Asian pitvipers (Trimeresurus and Ovophis). Molecular Phylogenetics and Evolution, 32(1), 83-100.

Guo, P., & Zhao, E. M. (2006). Comparison of skull morphology in nine Asian pit vipers (Serpentes: Crotalinae). The Herpetological Journal, 16(3), 305-313.

Duan, H. L., He, Q. Y., Zhou, B., Wang, W. W., Li, B., Zhang, Y. Z., … & Yu, X. D. (2016). Anti-Trimeresurus albolabris venom IgY antibodies: preparation, purification and neutralization efficacy. Journal of Venomous Animals and Toxins including Tropical Diseases, 22(1), 23.

ZHU, Fei, LIU, Qin, CHE, Jing, et al. Molecular phylogeography of white‐lipped tree viper (Trimeresurus; Viperidae). Zoologica Scripta, 2016, vol. 45, no 3, p. 252-262.