Cetoniinae

Definition

A subfamily of scarab beetles (family Scarabaeidae) commonly known as flower chafers, comprising approximately 4,000 described species across 11+ tribes. Members are typically diurnal, often brightly colored or metallic, and frequent flowers for pollen, nectar, or petal tissue; many species also feed on ripe or rotting fruit. The subfamily includes diverse body plans from small, compact beetles to large, robust forms such as goliath beetles (tribe Goliathini). Cetoniinae is distinguished from other scarab subfamilies by a combination of adult mouthpart morphology, larval development in decaying wood or humus rather than dung, and frequent association with flowering plants.

Etymology

From Cetonia (type genus, from Greek ketos, 'sea monster,' perhaps alluding to the convex, rounded body form) + Latin suffix -inae (subfamily rank).

Example

The rose chafer (Cetonia aurata) and the goliath beetle (Goliathus goliatus) represent opposite ends of Cetoniinae morphology: the former is a small, metallic green flower visitor common in European gardens, while the latter is among the world's largest beetles, with males reaching 11 cm and larvae developing in African rainforest soil and rotting wood.

Synonyms

• flower chafers
• flower scarabs
• fruit and flower chafers

Related Terms

• Scarabaeidae
• Scarabaeoidea
• Cetoniini
• Goliathini
• Trichiini
• scarab beetle
• flower visitation
• Phytophagy
• saprophagy

Usage Notes

Cetoniinae is treated as plural in formal taxonomic usage (the Cetoniinae are...), though the name itself is grammatically singular. The subfamily has undergone repeated tribal reclassification; older literature may recognize different tribal boundaries. Not all flower-visiting scarabs belong here—some tribes in Rutelinae and Dynastinae also visit flowers, so floral association alone does not place a specimen in Cetoniinae. The common name 'flower chafer' is sometimes applied loosely to any scarab found on flowers, but strictly refers to this subfamily.