Psilogramma menephron, the privet hawk moth or large brown hawkmoth, is a member of the family Sphingidae. It was described by Pieter Cramer in 1780. It is usually found in Sri Lanka, India, Nepal, central and southern China, Thailand, Vietnam, Indonesia and the Philippines. Wikipedia
Scientific name: Psilogramma menephron
Spotted at Choa Chu Kang
