Gnathothlibus dabrera 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 Sulawesi

Sulawesi

Sulawesi is one of the four larger Sunda Islands of Indonesia and is situated between Borneo and the Maluku Islands. In Indonesia, only Sumatra, Borneo, and Papua are larger in territory, and only Java and Sumatra have larger Indonesian populations.- Etymology :The Portuguese were the first to...

.

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 62-76.8 mm for males and 81.5 mm for females. It differs from Gnathothlibus erotus

Gnathothlibus erotus

The White-brow hawkmoth is a moth of the Sphingidae family. It is found from India to the south Pacific, including Borneo, the Cook Islands, Papua New Guinea, the Philippines and Australia.The wingspan is about 70 mm...

in its smaller size and darker ground colour. Furthermore, the hindwing upperside has a dark marginal band in the males that is broader than in males of Gnathothlibus erotus, but about as wide as in females of Gnathothlibus erotus.