The Asian longhorned beetle (ALB) is an invasive pest that was introduced to the US through the transport of wood packing material from China. The ALB attacks and eventually kills American hardwoods, such as maple, ash, birch, willow, poplar, and elm trees by boring into trunks and branches during its larvae stage. Trees damaged by this pest have round exit holes about one half inch in diameter and may have a residue that resembles sawdust, called frass, piled up at the base.

Early detection of infestations and rapid treatment response are crucial to the successful eradication of the beetle. It is important to recognize it early and then to report it immediately to local, state or federal agencies.