The Chinese rose beetle is a member of the family of scarab beetles. It is a major pest to a wide variety of plants, attacking their leaves and defoliating them.
Size: 10 – 12 mm
Color: It is reddish-brown.
Other Characteristic Features: These beetles are oblong and oval-shaped, covered in dense, creamy, scale-like hairs, which give them a grayish appearance.
They are white and ‘C’- shaped. The larva passes through three instars, 19.6-22.8 days for the first instar, 14.5-16.8 days for the second, and 34.3 – 44.4 days for the third.
The pupae are 6-12 mm long and covered with short, dense hair. This stage lasts for 11 – 17 days.
Eggs are white and oval, measuring 1.5 x 1.0 mm. They hatch after 7-16 days.
| Lifespan | 1 week |
| Distribution | Native: Japan and Taiwan Invasive: Southeast Asia and the Pacific islands |
| Habitat | Agricultural land, plantations, managed forests, orchards, natural forests, urban areas, and coastal regions |
| Predators | Wasps and other beetles |
| Host plants | Asparagus, beans, broccoli, cabbage, cacao, corn, cotton, cucumber, eggplant, ginger, grape, green bean, okra, rose, soybeans, strawberry, and sweet potato. |
| Diet of adults | Plant tissue of host plants |
The leaves these beetles feed on are completely skeletonized, with nothing but the veins remaining.
Image Source: lh6.ggpht.com, lh3.googleusercontent.com, researchgate.net, ctahr.hawaii.edu, inaturalist-open-data.s3.amazonaws.com,
The Chinese rose beetle is a member of the family of scarab beetles. It is a major pest to a wide variety of plants, attacking their leaves and defoliating them.
Size: 10 – 12 mm
Color: It is reddish-brown.
Other Characteristic Features: These beetles are oblong and oval-shaped, covered in dense, creamy, scale-like hairs, which give them a grayish appearance.
They are white and ‘C’- shaped. The larva passes through three instars, 19.6-22.8 days for the first instar, 14.5-16.8 days for the second, and 34.3 – 44.4 days for the third.
The pupae are 6-12 mm long and covered with short, dense hair. This stage lasts for 11 – 17 days.
Eggs are white and oval, measuring 1.5 x 1.0 mm. They hatch after 7-16 days.
| Lifespan | 1 week |
| Distribution | Native: Japan and Taiwan Invasive: Southeast Asia and the Pacific islands |
| Habitat | Agricultural land, plantations, managed forests, orchards, natural forests, urban areas, and coastal regions |
| Predators | Wasps and other beetles |
| Host plants | Asparagus, beans, broccoli, cabbage, cacao, corn, cotton, cucumber, eggplant, ginger, grape, green bean, okra, rose, soybeans, strawberry, and sweet potato. |
| Diet of adults | Plant tissue of host plants |
The leaves these beetles feed on are completely skeletonized, with nothing but the veins remaining.
Image Source: lh6.ggpht.com, lh3.googleusercontent.com, researchgate.net, ctahr.hawaii.edu, inaturalist-open-data.s3.amazonaws.com,
