Asian Longhorned Beetle (Anoplophora glabripennis)

Invader Type: 



Pest Overview and Identification: 

What does Asian Longhorned Beetle look like? Check out APHIS's Asian Longhorned Beetle website.


The Asian longhorned beetle (ALB), Anoplophora glabripennis,is an invasive insect that feeds on certain species of hardwood trees, eventually killing them. Also known as the Starry Sky or Sky Beetle, the ALB is native to eastern Japan, and Korea. ALB attacks a variety of native hardwood species, including maple, birch, elm, poplar, horse chestnut and willow. Upon hatching, the larvae tunnel through the heartwood of a host tree until fully grown. They then burrow out of the trunk as adult beetles. This process weakens the wood, making it prone to breakage, and can cause tree health to decline. Outbreaks of this beetle pose a severe threat to even perfectly healthy trees in both forests and urban and suburban landscapes. The ALB has now been accidentally introduced from Asia to the United States as well as Canada and several countries in Europe. In the United States, it was first discovered in Brooklyn, New York in 1996; most likely transported inside wood packing material. The beetle has caused tens of thousands of trees to be destroyed in Illinois, Massachusetts, New Jersey, New York and Ohio. About half of Vermont’s trees are susceptible to Asian longhorned beetle. This insect will have a major impact if it becomes established in Vermont.
Reproductive Strategy / Lifecycle: 

Learn about the biology of Asian Longhorned Beetle at the USDA APHIS Asian Longhorned Beetle site.

Signs and Symptoms of Pest: 

Learn the signs and symptoms of Asian Longhorned Beetle in the following training manual: 'Detecting the Signs and Symptoms of Asian Longhorned Beetle Injury' - pdf.



Ecological Threat: 

Learn the host trees to Asian Longhorned Beetle at the USDA APHIS Beetle Busters site and listed by preference.


Click here for the latest map of Asian longhorned beetle infestations.

A native of East Asia, Asian longhorned beetle was first discovered in the U.S. in New York City in 1996, and has also been found in Chicago, Toronto and New Jersey.  In August, 2008, an infestation was found in Worcester, MA, 45 miles from VT. The area under quarantine continues to expand as additional surveys are completed.  A small group of infested trees was detected in Boston in 2010, and in 2011, an infestation was found in southwestern Ohio.