
Photo: Prathamesh Khedwan · CC BY 4.0 (May be cropped or resized)
Craspedocephalus anamallensis
Range
Kerala
The Malabarian pit viper is a venomous, partly tree-dwelling pit viper from South India. It is known to have several colour morphs: brown, green, grey and olive (Wikipedia, general species account).
The Reptile Database lists Kerala. The account used here gives no further detail.