Definition of Japanese beetle
: a small metallic green and brown scarab beetle (Popillia japonica) that has been introduced into eastern North America from Japan and as a grub feeds on the roots of grasses and decaying vegetation and as an adult eats foliage and fruits
JAPANESE BEETLE Defined for English Language Learners
Definition of Japanese beetle for English Language Learners
: a small green and brown beetle that is originally from Asia and that causes damage to plants in the U.S.
Learn More about japanese beetle
Britannica.com: Encyclopedia article about Japanese beetle
Seen and Heard
What made you want to look up Japanese beetle? Please tell us where you read or heard it (including the quote, if possible).