Hippotion brunnea 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 Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

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It is similar in forewing pattern to Hippotion brennus

Hippotion brennus

Hippotion brennus is a moth of the Sphingidae family. It is known from the Moluccas, Papua New Guinea, the Solomon Islands and north-eastern Australia....

form rubribrenna but distinguishable by the entirely brown hindwing upperside, the strong white dorsal line running from the head to the tip of the abdomen and the lack of subdorsal abdominal silvery-white patches. The upperside of the head, thorax and abdomen have a strong white dorsal line. The hindwing upperside is brown. The marginal band is slightly darker.