Coequosa triangularis

Coequosa triangularis, the double-headed hawk moth, is a moth of the family Sphingidae.

Distribution
It is known from the Australian states of New South Wales and Queensland.

Description
The species was first described by Edward Donovan in 1805. The wingspan is about 130 mm, making it Australia's largest hawk moth. Adults are yellow and brown with broad wavy markings.

Biology
The larvae feed on Banksia ericifolia, Grevillea robusta, Hakea dactyloides, Macadamia integrifolia, Persoonia levis and Stenocarpus sinuatus. Full-grown larvae are about 100 mm long.