| Latin Name | Popillia japonica |
| Common Name | Japanese beetle |
| Biology | Adults are ~15 mm, metallic green with copper elytra. Larvae (white grubs) feed on grass roots. One generation/year. Adults feed in groups, skeletonizing leaves . |
| Damage | Larvae damage turfgrass and crops (maize, soybeans). Adults defoliate trees (e.g., roses, birch) . |
| Distribution Regions | Native to Japan; invasive in North America (e.g., US, Canada) and Europe (Italy, Switzerland) . |
| Monitoring | Visual surveys. Pheromone-baited traps. Turf sampling for grubs . |
| Recommended Traps | Pheromone traps (e.g., Japanese beetle traps) . |
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