Boisduval’s Tree Nymph is the most commonly encountered member, and with a wingspan of about 4cm also the smallest, of the butterfly genus Sevenia. They inhabit coastal and montane forests and dense woodlands and are usually seen gliding through the shadows or basking in the sun against a branch or trunk. Boisduval’s Tree Nymphs may swarm in their thousands at the end of summer, though adults may be found throughout the year. Adults are attracted to leaking tree sap and rotting fruit while the gregarious larvae feed on plants from the Euphorbiaceae-family.
In South Africa, Boisduval’s Tree Nymph occurs from the Eastern Cape northwards along the Indian Ocean coast and adjacent interior through Kwazulu-Natal and into the lowveld of Mpumalanga and Limpopo. Beyond our borders their distribution extends to Ethiopia in the north-east and Sierra Leone in the west.