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THE GARDEN SAGEA library of living things
Wildlife & landscape pests · Western North Carolina field companion

Asiatic garden beetle

Maladera formosae · formerly M. castanea

Asiatic garden beetle · chestnut-brown adult
Asiatic garden beetle · chestnut-brown adultJudy Gallagher ↗ · CC BY 2.0
Photo contextThe source uses the older name Maladera castanea; the current NC profile uses Maladera formosae.

Nighttime inspection can reveal the small brown beetle behind mysteriously ragged leaves.

Record
Landscape reference
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In the landscape.

Plants & places

Many ornamentals and garden plants; larvae occupy soil around roots.

Recognize the damage

Irregular holes and chewed leaf margins, often close to the ground, rather than the classic Japanese-beetle skeleton.

Before you act

Return to fresh damage after dark with a light. Check soil immediately around favored plants during the day.

A sensible first response

Hand-collect adults where practical and reassess whether feeding continues. Confirm the species before choosing a control intended for another scarab.

When to look

Summer, often most noticeable in July and August; grubs overwinter in soil.

In Western North Carolina

A landscape pest to consider in WNC; older references and photo archives use the name Maladera castanea.

Identification, lookalikes & further notes

Identification

Small chestnut-brown scarab beetles emerge to feed at night and hide in soil by day.

Lookalikes & limits

Japanese beetles are metallic and active by day; other brown scarabs may require closer identification.

In the garden

Irregular holes and chewed leaf margins, often close to the ground, rather than the classic Japanese-beetle skeleton.

What would help next

Record the host plant, date, fresh damage, and a clear photograph of the animal or insect. A damage match narrows the search; it does not establish an identification.

Your margin of the garden.

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