An invasive, tree-killing insect called the Spotted Longhorn Beetle (A. glabripennis) threatens trees such as maples, elms and willows. It is native to Asia and has been inadvertently introduced to many locales including the USA, Canada and Europe.
A Devastating Pest
The SLB adult lays their eggs in the cracks and crevices of tree bark. Once hatched, the larvae bore into trees and feed on wood tissue hindering a tree’s vascular system− vital to transporting water and nutrients. The feeding is weakening trees, leaving them vulnerable to disease and wind damage. In the most extreme cases, trees can die from it.
Identifying the Threat
Therefore, detecting the symptoms of SLB infestation on time is critical for its control. Look for the following:
Adult beetles Large, very shiny black beetle with long antennae
Egg-laying sites are small, round holes in the bark.
Exit holes: Ovals on the bark that are bigger in size.
Sawdust — A group of sawdust at the bootom of trees.
Advanced: Branch dieback and Blight of Leaves.
Controlling the Pest
Insecticides are difficult to control SLB and a concerted effort to manage the pest is often needed Some common methods include:
Tree removal when infested: The tree will be destroyed to prevent the beetle from spreading.
Chemical treatment -insecticides for the control of adults and their larvae.
Biological control: This would use parasitic wasps or some other natural enemy to suppress the beetles.
Awareness and early detection for the general public: Increase awareness in society about signs of infection, reporting at its earliest stage.
It is by recognizing the menace of the Spotted Longhorn Beetle and acting in order to deter it that we may keep our forests and urban trees safe.