Adhemarius eurysthenes 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...

 in the family 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,...

. It was described by R. Felder in 1874, and is known from Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

, Colombia

Colombia

Colombia, officially the Republic of Colombia , is a unitary constitutional republic comprising thirty-two departments. The country is located in northwestern South America, bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by the Caribbean Sea; to the...

 and Paraguay

Paraguay

Paraguay , officially the Republic of Paraguay , is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to the east and northeast, and Bolivia to the northwest. Paraguay lies on both banks of the Paraguay River, which runs through the center of the...

.

It is similar to Adhemarius palmeri

Adhemarius palmeri

Adhemarius palmeri is a moth of the Sphingidae family. It is found from Costa Rica into most of South America.The wingspan is 99-124 mm. The species probably broods continuously, with records indicating adults are on wing from March to July and again in October.The larvae probably feed on Ocotea...

, but the forewing upperside subbasal band is complete and irregular along proximal margin, the antemedian oblique line is very narrow, almost transverse and reaching the costa just distal to the subbasal band and the subapical patch is smaller and bluntly triangular. The hindwing upperside marginal band is also narrower.

There are probably at least two generations per year with peak flights in February and from July to August.

The larvae probably feed on Ocotea

Ocotea

Ocotea is a genus of flowering plants belonging to the family Lauraceae. The genus includes over 200 species of evergreen trees and shrubs, distributed mostly in tropical and subtropical regions of Central and South America, the West Indies, also with a few species in Africa and Madagascar, and...

(such as Ocotea veraguensis, Ocotea atirrensis and Ocotea dendrodaphne) and Persea

Persea

Persea is a genus of about 150 species of evergreen trees belonging to the laurel family, Lauraceae. The best-known member of the genus is the avocado, P. americana, widely cultivated in subtropical regions for its large, edible fruit.-Overview:...

species.