Insects

Popillia japonica

Japanese beetle (Popillia japonica)
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) .

Literature review

Semiochemical evidence

The cited publications support the exact compound-species relationship. Formulation, ratio, loading, release rate and field lifetime depend on a validated lure protocol and are not inferred here.

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