Heterorrhina

Heterorrhina is a genus of beetles in the family Scarabaeidae, subfamily Cetoniinae. Members of this group are commonly known as flower chafers or fruit chafers and are distributed primarily in tropical Africa. In some taxonomic treatments, Heterorrhina is regarded as a distinct genus; in others it is treated as a subgenus of Dicronorrhina, reflecting varying classifications within Cetoniinae.

Geographic range and habitat

Species within Heterorrhina are native to tropical regions of Africa, with records from forests and savannas in Central and East Africa. They are typically associated with floral-rich habitats where adults can access nectar, pollen, and ripe fruit.

Description

Heterorrhina beetles are generally large-bodied cetoniines. They often display metallic greens or bronzes with contrasting markings in red, white, or black. Sexual dimorphism is common, with males sometimes possessing enlarged or modified structures on the head or thorax used in combat, while females tend to lack these features.

Ecology and life cycle

Adults are mostly diurnal and visit flowers, making them conspicuous on flowering vegetation. They feed on nectar, pollen, and fruit. The larvae develop in decaying wood, leaf litter, or soil enriched with organic matter, where they pass through eggs, larval, and pupal stages before emerging as adults. The duration of the life cycle varies by species and environmental conditions.

Conservation and human interaction

Some Heterorrhina species are sought after by insect collectors and kept in captivity. Habitat loss and over-collection can threaten wild populations, underscoring the importance of sustainable management and, in some cases, captive breeding programs.