- Uncertain distribution. Asia, Oceania. On cucurbits. Common on cucumber, melon, pumpkin, watermelon and gourds. Similar species are pests of these plants elsewhere in Southeast Asia and Oceania..
- Eggs are laid in the soil, and larvae feed on the roots.
- Adults do the damage, cutting circles from the leaves; often several beetles feed on the same leaf.
- Cultural control: avoid planting new crops next to old; ensure adequate nutrition and water so plants outgrow beetle damage; catch beetles in early morning or evening; at harvest, collect trash and destroy after harvest; leave 1-2 months before replanting.
- Chemical control: spray with wood ash (ash + lime in water); alternatively, PDPs: neem, derris and pyrethrum, or spinosad; or synthetic pyrethroids, but likely to kill natural enemies.