Eurypteryx falcata is a 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 Papua New Guinea

Papua New Guinea

Papua New Guinea , officially the Independent State of Papua New Guinea, is a country in Oceania, occupying the eastern half of the island of New Guinea and numerous offshore islands...

.

Description

The forewing upperside has a dark brown triangle with its base along the costa, where there are several small paler spots. The apex of this triangle is directed towards the inner margin. There is a darker area around the white discal spot. The forewing underside has a round blotch restricted to the disc of the wing. The hindwing upperside has a dark brown median band and the hindwing underside has three dark transverse lines.