Ambulyx substrigilis

Ambulyx substrigilis, the dark-based gliding hawkmoth, is a species of moth of the family Sphingidae. It was described by John O. Westwood in 1847.

Distribution
It is known from Sri Lanka, India, Nepal, Bangladesh, the Andaman Islands, the Nicobar Islands, Thailand, Vietnam, China (Hainan Island), Malaysia (Peninsular, Sarawak), Indonesia (Sumatra, Kalimantan) and the Philippines.

Description
The wingspan is 96–120 mm.

Biology
The larvae have been recorded feeding on Aglaia littoralis in India.

Subspecies

 * Ambulyx substrigilis substrigilis (Sri Lanka, India, Nepal, Bangladesh, Andaman and Nicobar Islands, Thailand, Vietnam, China (Hainan Island), Malaysia (Peninsular, Sarawak), Indonesia (Sumatra, Kalimantan), Philippines)
 * Ambulyx substrigilis aglaia (Jordan, 1923) (India)

In The Fauna of British India, Including Ceylon and Burma: Moths Volume I, the species is described as follows: