a large brown European beetle which flies at dusk and often crashes into lighted windows. The adults are damaging to foliage and flowers, and the larvae are a pest of cereal and grass roots (五月)金龟;(五月)鳃金龟。 亦称 May bug
Melolontha melolontha, family Scarabaeidae 拉丁名Melolontha melolontha,金龟科
语源
early 18th cent.: from cock (expressing size or vigour) + chafer