Any of various small beetles of the genus Byturus (family Byturidae), which are pests of raspberries; especially the yellowish-brown B. tomentosus, the adult of which feeds on the flower buds of raspberries and the larva on the growing fruit.
Origin
Late 19th century; earliest use found in American Naturalist.
Definition of raspberry beetle in US English:
raspberry beetle
noun
Any of various small beetles of the genus Byturus (family Byturidae), which are pests of raspberries; especially the yellowish-brown B. tomentosus, the adult of which feeds on the flower buds of raspberries and the larva on the growing fruit.
Origin
Late 19th century; earliest use found in American Naturalist.