The chestnut brown chafer is a small brown scarab beetle, under half an inch long, from Japan, Korea, China, and Taiwan. Adults chew the leaves of broadleaf trees, and the grubs eat roots underground. It isn't known to live in the United States, but it is on lists of foreign beetles that could do harm if brought in.
Appearance
- Appearance
- About 0.3–0.4 in (8.5–10.5 mm) long, dark brown and densely covered with tan, scale-like hairs, with small white spots on the back.
Where it lives
- Range
- Japan, Korea, China, and Taiwan. Not known from the wild in the United States.
Behavior
- Diet
- Adults chew the leaves of many broadleaf trees, such as chestnut and oaks. The grubs feed on roots underground.
- Activity
- In Japan, adults feed on tree leaves by day and fly to lawns in the evening to burrow into the soil. They come to lights.
Life cycle
- Larva
- The C-shaped grubs live in soil and can damage turfgrass roots, a problem on golf courses in Japan and Korea.
Conservation
- IUCN Red List
- NENot EvaluatedNot yet assessed
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