How to Protect Against Asian Longhorned Beetles


The Asian Longhorn Beetle is a non-native beetle from China and Korea. It infests hardwood trees, eventually killing the trees. The beetle is so destructive it is capable of disrupting entire ecosystems if not controlled. As of summer 2010, the Asian Longhorn Beetle is infesting trees in New York, New Jersey and Illinois. The beetle has also been spotted at warehouses in California, where it is believed they were transported via wooden shipping materials. Steps are being taken to eradicate this beetle and prevent spreading to trees in other areas of the country.

Step 1

Refrain from cutting down trees infested with the Asian Longhorn Beetle. Only a certified tree service should handle and remove infected trees.

Step 2

Obtain an inspection permit for any wood you plan on moving or disposing of, whether you know it to be infested with the Asian Longhorn Beetle or not. Inspectors will either issue a permit for the movement of safe wood or dispose of any infested wood for you. Contact the ALB hot line for information on obtaining a permit in your area (see Resources).

Step 3

Plant trees that do not attract the Asian Longhorn Beetle. The beetles prefer hardwood varieties, such as maple, willow, sycamore, birch, elm and ash, so avoid planting these types of trees. Contact the ALB hot line for approved tree species.

Step 4

Inspect trees in your yard and surrounding areas. Look for adult Asian Longhorn Beetles, which are black with white spots and have very long, banded antennae. The beetles are typically 3/4 to 1 1/2 inches long.

Step 5

Look for egg sites and exit holes on trees. Egg sites are round or oval wounds on the trunk approximately 1/2 inch wide. Exit holes are 1/2 inch in diameter and appear on the tree's trunk, branches or exposed roots.

Step 6

Capture adult Asian Longhorn Beetles, in a jar, if possible. Report the beetles, as well as sightings of egg sites and exit holes, to the ALB hot line.

Tips and Warnings

  • It is more difficult to spot Asian Longhorn beetles, and their effects on trees, on cloudy days. Inspections should be performed on bright, sunny days.

Things You'll Need

  • Inspection permit Binoculars


  • Extension: Asian Longhorn Beetle
  • University of Vermont: Prevention of Asian Longhorn Beetle
  • University of Vermont: Beetle Busting Pamphlet

Who Can Help

  • University of Vermont: Nationwide Contact Information for ALB Sightings
Keywords: asian longhorn beetle, protect against ALB, spotting ALB

About this Author

Sophia Darby is a former professional hairstylist who has spent the last six years writing hair-related articles for both online and print publications. Her work has appeared in Celebrity Hairstyles Magazine, as well as multiple websites.