Eucryptorrhynchus brandti

Eucryptorrhynchus • Curculionidae • Coleoptera (against weeds) • insects • weed bioagents • Beneficials/natural enemies

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Eucryptorrhynchus brandti (weed bioagent/pest) (Harold, 1881)

This weevil is found in northern China, Japan, Korea and eastern Russia, where it is regarded as a pest of the tree-of-heaven, Ailanthus altissima. The adults feed on the leaves and buds and lay eggs under the bark of the tree. The larvae feed on the cambium and xylem, forming galleries under the bark. The damage caused by the weevils can cause tree mortality in China.

It is being studied as a possible classical biological control agent against the invasive tree-of-heaven, Ailanthus altissima. 

The adults are around 10 mm long and black to reddish brown. Parts of the elytra, thorax and abdomen are covered with whitish scales.