Among the harder to -see, forest-dwelling species the arboretum is particularly rich in butterflies. Butterflies are the adult stage of an insect, and feed solely on nectar provided by flowers, or on rotting materials. The Golden Piper, Green-banded swallowtail (Papilio phorcas), and Green-veined charaxes (Charaxes candiope) are common. Many butterflies live in open, sunny areas exhibiting a variety of colours. One of these you may see in the Arboretum is the African migrant (Catopsilia florella)