The Triangle Keelback (Xenochrophis trianguligerus) is a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of snake

Snake

Snakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...

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Distribution: Brunei Darussalam, Burma (Myanmar), Cambodia, India (Nicobar Islands; Arunachal Pradesh (Deban - Changlang district)), Indonesia (Nias, Mentawai, Sumatra, Riau Archipelago, Bangka, Billiton, Borneo, Java, Sulawesi=Celebes, Sangihe Archipelago, Ternate), Laos, Malaysia (Malaya and East Malaysia), Singapore, Thailand, Vietnam.

Type locality: Java