Asian Long-horned Beetle (Anoplophora glabripennis)

Asian Long-horned Beetle (Anoplophora glabripennis)


The Asian long-horned beetle (ALHB) is native to China and Korea, where it’s considered a forest pest as well.  ALHB was accidentally introduced in to Canada in the 1990s via untreated shipping pallets.  It infests all deciduous trees, but prefers native maple species.  ALHB has been detected in Ontario, but has not been detected in PEI to date.




Here are some key features that may help to positively identify the Asian long-horned beetle:

Adult beetles:

  • 2-4 cm long
  • Have shiny, black backs with irregular white patches
  • Black and white banded antennae that are roughly 1-2 times the length of the body
  • Bluish legs
  • Females lay chew oval oviposition pits (about 10 mm wide) into the bark and lay a single egg in this cavity.  Oviposition pits can occur from ground level up into the crown. Frothy, white sap may exude from recently created oviposition pits.  (Canadian Food Inspection Agency)
  • Adults create a small hole in trees when exiting, approximately 1 cm across
  • Feed on leaves and twigs of host trees
  • Larvae hatch and begin tunneling through the host tree, destroying living tissue and stopping the flow of nutrients and water, leading to tree mortality

ALHB Symptoms:

The Asian long-horned beetle is considered a priority species for the PEI Invasive Species Spotters Network.  If you see this plant, please report your sighting.