The Brown Striped Hawk (Basiothia schenki) 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 Zimbabwe

Zimbabwe

Zimbabwe is a landlocked country located in the southern part of the African continent, between the Zambezi and Limpopo rivers. It is bordered by South Africa to the south, Botswana to the southwest, Zambia and a tip of Namibia to the northwest and Mozambique to the east. Zimbabwe has three...

 and South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

.

It has a close plant-pollinator relationship with Disa cooperi, whose scent attracts only two hawkmoth species, Basiothia schenki and Agrius convolvuli

Agrius convolvuli

The Convolvulus Hawk-moth, Agrius convolvuli, is a large hawkmoth. It is common throughout Europe, Africa and Australia.-Description and habits:The wingspan is 80-105 mm...

, that can effectively pollinate its flower. The moths’ proboscis length and the orchid’s spur length align perfectly with its petals and position of the pollinaria and stigma, although B. schenki has a shorter proboscis than A. convolvuli and must fly almost up to the flower and press against it. Adults are also pollinators of Zaluzianskya natalensis

The larvae feed on Vernonia

Vernonia

Vernonia is a genus of about 1000 species of forbs and shrubs in the family Asteraceae. Some species are known as Ironweed. Some species are edible and of economic value. They are known for having intense purple flowers. The genus is named for English botanist William Vernon. There are numerous...

species.