The Fan-tailed Bark Moth (Callionima nomius) is a moth 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 found from Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 and Central America

Central America

Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...

 to the north-western half of South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

.

The wingspan is 70-80 mm. It is immediately distinguishable from all other Callionima

Callionima

Callionima is a genus of moths in the Sphingidae family.-Species:* Callionima acuta - * Callionima calliomenae - * Callionima denticulata -...

species by the forewing upperside pattern and hindwing upperside colour. The forewing upperside is deep brown with a pale brown triangular patch on the costa and a silver discal spot represented only by a minute dot. The hindwing upperside is dark brown with a buff base.

Adults are on wing year round. Adults nectar at flowers, including Nicotiana forgetiana.

The larva

Larva

A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...

e probably feed on Apocynaceae

Apocynaceae

The Apocynaceae or dogbane family is a family of flowering plants that includes trees, shrubs, herbs, and lianas.Many species are tall trees found in tropical rainforests, and most are from the tropics and subtropics, but some grow in tropical dry, xeric environments. There are also perennial herbs...

 species, possibly including Aspidosperma macrocarpa.