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Asian Longhorn Beetle

Asian Longhorn Beetle - a Threat to Our Hardwood Trees! 

The Asian longhorn beetle (ALB) is an exotic pest threatening a wide variety of hardwood trees in North America. Adults are large (0.75 - 1.50 inches long) with very long black and white banded antennae.  The body is glossy black with irregular white spots.  The beetle has been introduced into New York City, Chicago, New Jersey and most recently Worcester. Adults can be seen from late spring to fall depending on the climate.  Learn more about it's biology, how to distinguish ALB from other native insects, and what trees it infests.

 If you think you have found one, call 1-866-702-9938, or report it online at http://massnrc.org/pests/albreport.aspx. Keep the specimen in a jar for inspection until a USDA or DCR team member contacts you for follow-up.

Why is this beetle a threat?

  • Attacks many tree species.   ALB attacks many hardwood trees, such as maple, elm, horsechestnut, ash, birch, poplar, willow and many more.  These trees represent many billions of dollars to the U.S. economy by supplying lumber, wood products, maple syrup, and promoting tourism (Host Trees).
  • Kills Trees.  ALB kills young and mature trees by tunneling within the trunk and branches, disrupting sap flow and weakening the tree.
  • Potentially disrupts forest.  Because this beetle attacks many different tree species, it could significantly disrupt the forest ecosystem, if it became established over a large area.
  • No controls.  No chemical or biological control methods are currently known, although the USDA - APHIS is conducting experiments testing the effectiveness of some insecticides.  (Management)

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Dudley Conservation Commission
71 West Main Street, Suite 8, Dudley, MA 01571
Phone: 508-949-8011
Email: conservation@dudleyma.gov