Pearl Charaxas African butterfly - The Karkloof Emperor or Pearl Emperor (Charaxes varanes) is a butterfly of the family Nymphalidae, found in Africa from Saudi Arabia to South Africa. The wingspan is 65–70 mm in males and 70–90 mm in females. Flight period is year-round. Larvae feed on Allophylus spp. and Cardiospermum halicacabum.