Tunneling in the wood by the larvae can girdle tree stems and branches. Repeated attacks lead to dieback of the crown and eventually, death of the tree. They are native to Asia, but presently they are undergoing eradication efforts in New York City and Chicago areas. Maple, popular, willow, birch, elm, ash, and horse chestnut. Antennae are longer than the body with alternating black and white bands.
Legs are black with pale bluish sections.
Larvae and pupae are hidden inside the host tree within tunnels bored by the larvae. Round holes in the bark approximately 1 cm across, bored by the emerging adult. Oval to round pits or niches in the bark made by the adult female to deposit her eggs. Sap that oozes from the egg laying pits as the larvae feed. Adult Asian Longhorned Beetle Picture showing round holes in the bark bored by the emerging adults, as well the shallow niches in the bark excavated by the female to deposit her eggs.