Falcatula tamsi 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 Ethiopia

Ethiopia

Ethiopia , officially known as the Federal Democratic Republic of Ethiopia, is a country located in the Horn of Africa. It is the second-most populous nation in Africa, with over 82 million inhabitants, and the tenth-largest by area, occupying 1,100,000 km2...

.

The length of the forewings is 33 mm for males. The ground colour of the upperside of the forewings is pale greyish-yellow, but darker at the termen. There are two very small faint basal dots. The grey subbasal line is faint. The hindwings are indented at the margin and slightly produced at the tornus. The ground colour of the upperside is the same as the forewings, but the marginal area is darker. The underside ground colour is pale greyish yellow. The basal spots, subbasal and antemediallines and stigmata are absent in both wings. There are four wavy, parallel dark lines running from the costa to the inner margin beyond the end of the cell and there is a short dark streak from the subterminal line to the apex of the forewings. The proboscis

Proboscis

A proboscis is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate. In simpler terms, a proboscis is the straw-like mouth found in several varieties of species.-Etymology:...

is rudimentary. The antennae, head and body are uniformly pale greyish yellow.