In an effort to stop the spread of this potentially disastrous pest we are offering our current customers a year of free lawn care for confirmed identification of an infested tree. This offer is only for trees outside of the quarantine zone at the date of discovery, and is in effect until Friday May 15 at 5:00 pm.  Check your trees now, because identification is most effective before the trees leaf-out.  
 

Host Trees:

 Non-host Trees:

 All evergreens, and Oak species
 

Look for these signs of infestation

Trees can be infested for years without showing signs of decline. Careful, close inspection is critical. Binoculars are helpful for looking into the tops of trees.  You will not find adult beetles at this time of year, look for signs of infestation.


Exit holes: Adult beetles emerge from trees by chewing 3/8-1/2 inch almost perfectly circular holes in the branches and trunks of infested trees.
 

• The holes will be in a roughly zigzag pattern as opposed to woodpecker or sapsucker holes which will be in straight, parallel lines.
• Emerging beetles will produce large amounts of sawdust as they tunnel out, this “frass” will be evident on the ground or on branch crotches.
• The holes will be parallel to the ground, and if the eraser side of a pencil is inserted into the hole it will go in to at least the depth of the metal.

Egg sites (ovipostion sites):

• Female beetles chew ½ depressions in the tissue of host trees and lay single eggs.
• The depressions are then covered with an orange/brown secretion that turns gray/brown within a few days. Close inspection will show chisel-like marks on the edge of the site.

Frass

• Frass is a combination of saw dust and insect excrement that is produced as the adults borrow out of  host trees
• Asian Longhorn beetle produces large amounts of frass that builds up at the base of host trees and/or on branch crotches. 

Tree decline

• Premature leaf drop
• Early fall color
• Tree decline symptoms can be signs of many problems, but may also be associated with Asian Longhorn beetle infestaions

Help protect your valuable trees

Turf-Logic Asian Longhorn Beetle Protection Program

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If you have any questions don't hesitate to call us for identification.

Asian longhorn beetle links:

City of Worcester

United States Animal and Plant Health Inspection Service

UMass Extention