What is the key identifying feature of the White-lipped Tree Viper (*Trimeresurus albolabris*)?

Answer

A distinct white stripe along the upper lip/jaw

The White-lipped Tree Viper gets its name from a feature where a distinct white or yellowish line runs along its lower jaw or lips.

What is the key identifying feature of the White-lipped Tree Viper (*Trimeresurus albolabris*)?
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