Australian longhorn beetle

Symphyletes neglectus is a species of longhorn beetle within the Cerambycidae family and the Lamiinae subfamily. This wood-boring insect is recognized as a pest in its native range, known for its ability to infest the stems and branches of woody plants.

The beetle primarily targets various hardwood tree species. It is particularly noted for infesting plants that are already under environmental stress or those in nursery settings, where even minor larval feeding can have a significant impact on the plant's overall development and structural integrity.

The biology of this species revolves around its larval stage, which is spent boring into the inner bark and sapwood of the host plant. The female beetle typically deposits eggs into small crevices in the bark, and upon hatching, the larvae create tunnels that disrupt the vascular system of the tree.

The damage caused by Symphyletes neglectus often manifests as localized dieback, yellowing of foliage, and structural weakening of the limbs. In severe cases, the constant tunneling activities of the larvae can lead to the death of major branches or the entire tree, especially if infestation remains unchecked.

Management and control strategies include:

• Regular inspection of bark and foliage to detect early signs of infestation.
• Prompt pruning and disposal of infested tree parts by burning.
• Application of residual insecticides to trunks during peak adult activity.
• Improving tree vigor through proper fertilization and irrigation practices.