
Community identification
Japanese Beetle
Popillia japonica
- Order & Family
- Coleoptera: Scarabaeidae
- Size
- 8 to 11 mm (0.3 to 0.4 inches) in length
Natural Habitat
Found in gardens, landscapes, parks, and golf courses where host plants and turfgrass are present.
Diet & Feeding
Adults are generalist herbivores that skeletonize leaves of over 300 plant species; larvae (grubs) eat the roots of grasses.
Behavior Patterns
Adults are active during the day and are strong fliers attracted to pheromones and the scent of damaged plants. They undergo complete metamorphosis: egg, larva, pupa, and adult.
Risks & Benefits
Highly invasive and destructive agricultural pest. While they provide a food source for some birds and mammals, they cause significant economic damage to turf, ornamentals, and crops.