1) Garden plant pest 
At least two beetles are known as the rose chafer: ...
(from the article `chafer`) A well-known, destructive chafer is the rose chafer (M. subspinosus), a tan, long-legged beetle that feeds on the flowers and foliage of grapes, ...
The rose-chafer or rose-beetle (Cetonia aurata) is a handsome lamellicorn beetle family Scarabaeidae. The upper surface is golden-green, and the lower bright copper-coloured and they grow to twenty millimetres in length. In the adult state the beetle feeds on the tender parts of flowers, notably strawberries and roses, while the larvae feed on the ...
[n] - a common metallic green European beetle: larvae feed on plant roots and adults on leaves and flowers of e.g. roses 2. [n] - common North American beetle: larvae feed on roots and adults on leaves and flowers of e.g. rose bushes or apple trees or grape vines
Scarab - a family of beetles that have distinctively shaped antennae and are often metallic in colouration.
Cetonia aurata noun a common metallic green European beetle: larvae feed on plant roots and adults on leaves and flowers of e.g. rosesrose bug noun common North American beetle: larvae feed on roots and adults on leaves and flowers of e.g. rose bushes or apple trees or grape vines