Bug Identifier
Japanese Beetle
Community identification

Japanese Beetle

Popillia japonica

Order & Family
Coleoptera: Scarabaeidae
Size
8 to 11 mm (about 0.3 to 0.4 inches) in length
See this bug in the Encyclopedia

Natural Habitat

Found in gardens, landscapes, parks, and agricultural fields; larvae live underground in turf and soil.

Diet & Feeding

Adults are generalist herbivores that skeletonize foliage/flowers from over 300 plant species; larvae (grubs) eat grass roots.

Behavior Patterns

Adults are active during the day, especially in warm sunny weather, often congregating in large groups for feeding and mating.

Risks & Benefits

An invasive pest that causes significant damage to ornamental plants, crops, and lawns; no significant benefits to the local ecosystem.