
Photo: Sharon Reid (iNaturalist) · CC BY 4.0 (May be cropped or resized)
Xenochrophis trianguligerus
Range
Brunei, Myanmar, Cambodia, Indonesia, Laos, Malaysia, Singapore, Thailand and Vietnam; also the Nicobar Islands and Arunachal Pradesh
The triangle keelback is a species of snake found in Brunei, Myanmar, Cambodia, Indonesia (Nias, Mentawai and Sumatra), Laos, Malaysia, Singapore, Thailand and Vietnam, and also in the Nicobar Islands and Arunachal Pradesh in India. The type locality is Java (Wikipedia, general species account).