Manduca kuschei 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 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...

.

The length of the forewings is 39 mm for males and 46 mm for females. It is extremely similar to Manduca dilucida

Manduca dilucida

Manduca dilucida is a moth of the Sphingidae family. It is found from Mexico to Belize, Nicaragua and Costa Rica and possibly across northern South America to Venezuela.The wingspan is 95-98 mm....

and males can only be distinguished by a study of the genitalia. Females are also similar, but are separable by the pattern on their wings. Furthermore, the forewing upperside is more uniform in colour and the ground colour is grey with darker grey and black markings. The forewing and hindwing undersides are grey and the hindwing upperside is grey with darker grey and black markings.