Eumorpha neubergeri 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 Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

 and Bolivia

Bolivia

Bolivia officially known as Plurinational State of Bolivia , is a landlocked country in central South America. It is the poorest country in South America...

.

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 98-106 mm. The outer margin of the forewing is slightly crenulated. The forewing upperside is most similar to Eumorpha anchemolus

Eumorpha anchemolus

The Anchemola Sphinx Moth is a moth of the Sphingidae family. It is found from Argentina through Central America and into Texas, United States....

and Eumorpha triangulum

Eumorpha triangulum

Eumorpha triangulum is a moth of the Sphingidae family. It is found in Mexico, Belize, Guatemala, Honduras, Nicaragua, Costa Rica, Panama, Colombia, Ecuador, Peru, Bolivia, Argentina and possibly south-eastern Paraguay....

but distinguishable from both by the more-or-less parallel-sided dorsal abdominal band..

Adults have been recorded in late November early December in Argentina.