Asian Longhorned Beetle

The Asian longhorned beetle, scientific name-Anoplophora glabripennis, was first identified in North America in New York in 1996. Larvae of the beetle feed in the stems and branches of many hardwood tree species including maple, box elder, alder, elm, birch, poplar, and willow. Continued feeding can lead to the death of branches and entire trees. Adults of the species (photo upper left) are active from mid-May until early August. Females scrape a small notch in the bark to lay an egg (center). Larva (upper right) bore into the branches and trunk to feed producing waste that looks like sawdust (lower right). Mature larva pupate within the galleries they have made (lower centers). Adult chew their way out of the wood leaving round exit holes (lower left). 

Asian Longhorned Beetle lifecycle

These signs are similar to those produced by native longhorned beetles including the poplar borer, Saperda calcarata which feeds on poplar and willow, and Stenocorus schaumii which feeds on ash and maple. The Bureau of Forestry has responded to many suspected public sightings of adult Asian longhorned beetles. Many times these reports turn out to be native, conifer-feeding longhorned beetle called the whitespotted sawyer, Monochamus scutellatus, which is similar in appearance to the Asian longhorned beetle.sf-ALB_WhiteSpottedSawyer

Poplar Borer and Stenocorus schaumii

Asian longhorned beetle was first discovered in the United States in Brooklyn, New York in August 1996. Beetles were later detected in Chicago, Illinois in July 1998. In October 2002, the beetle was found in Hudson, Middlesex and Union Counties, New Jersey in August 2004. In August 2008, Asian longhorned beetle was discovered in Worcester County, Massachusetts and in Suffolk County, Massachusetts in July 2010.

In 2008, after the completion of control and regulatory activities, and following four years of negative surveys, Asian longhorned beetle was declared eradicated in Chicago, Illinois and Hudson County, New Jersey.

On June 17, 2011, the U.S. Department of Agriculture (USDA) confirmed the identification of Anoplophora glabripennis in Clermont County, Ohio. Effective immediately, USDA’s Animal and Plant Health Inspection Service (APHIS) is adding the Township of Tate and the entire acreage of East Fork State Park to the Asian longhorned beetle quarantine area. The Asian longhorned beetle quarantine area in southern Ohio is 56 square miles.

For additional background information download the U.S. Forest Service Pest Alert for Asian Longhorned Beetle or visit the U.S. Forest Service Forest Health Protection website.
For information on the current status of this pest consult the latest forest health report available on our Forest Pest Insects and Disease - Advisories page.

To report possible infested trees in Pennsylvania, contact:
The Pennsylvania Department of Agriculture 1-866-253-7189 
The Department of Conservation and Natural Resources, Bureau of Forestry,
Division of Forest Health (717) 948-3941, or