The Double Headed Hawk Moth (Coequosa triangularis) is a species of moth

Moth

A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...

 of the Sphingidae

Sphingidae

Sphingidae is a family of moths , commonly known as hawk moths, sphinx moths and hornworms, that includes about 1,200 species . It is best represented in the tropics but there are species in every region . They are moderate to large in size and are distinguished among moths for their rapid,...

 family. It is known from New South Wales

New South Wales

New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...

 and Queensland

Queensland

Queensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...

.

The wingspan

Wingspan

The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...

 is about 130 mm, making it Australia's largest Hawk Moth. Adults are yellow and brown with broad wavy markings.

The larvae feed on Banksia ericifolia

Banksia ericifolia

Banksia ericifolia, the Heath-leaved Banksia , is a species of woody shrub of the Proteaceae family native to Australia. It grows in two separate regions of Central and Northern New South Wales east of the Great Dividing Range...

, Grevillea robusta

Grevillea robusta

Grevillea robusta, commonly known as the southern silky oak or Silky-oak, or Australian Silver-oak, is the largest species in the genus Grevillea. It is a native of eastern coastal Australia, in riverine, subtropical and dry rainforest environments receiving more than 1,000 mm per year of...

, Hakea dactyloides

Hakea dactyloides

Hakea dactyloides, commonly known as the Finger Hakea, is a shrub of the Proteaceae family native to southeastern Australia. Two subspecies are recognised,...

, Macadamia integrifolia

Macadamia integrifolia

Macadamia integrifolia is a tree in the Proteaceae family, native to Queensland in Australia. Common names include Macadamia Nut, Bauple Nut, Queensland Nut or Nut Oak....

, Persoonia levis

Persoonia levis

Persoonia levis, commonly known as the broad-leaved geebung, is a shrub native to New South Wales and Victoria in eastern Australia. It reaches 5 m in height and has dark grey papery bark and bright green asymmetrical sickle-shaped leaves up to 14 cm long and 8 cm wide...

and Stenocarpus sinuatus

Stenocarpus sinuatus

Stenocarpus sinuatus, known as the Firewheel Tree is an Australian rainforest tree in the Protea family. The range of natural distribution is in various rainforest types from the Nambucca River in New South Wales to the Atherton Tableland in tropical Queensland...

. The head is an orange conical structure, but on its tail are two large raised black knobs. These look like a pair of large eyes, so that an observer or predator finds it difficult to determine which end is actually the head. The body is green or yellow, often with yellow diagonal stripes and sometimes with purplish lateral markings. It is covered in soft short pale spines. Full-grown larvae are about 100 mm long.