Quick Facts

  • Adult beetles are jet-black with a luster
  • 20-35 mm in length and 7-12 mm in width
  • Base of the 11-segmented antennae is whitish with a blue-black color
  • Antennae of male and female beetles are 1.5 and 1.3 times their body length, respectively
  • Each elytron has about 20 white (sometimes yellow) spots

Species Facts:

Native to China and Korea, the Asian Longhorned Beetle, anoplophora glabripennis, has been intercepted in solid wood packaging material in the USA (14 states) and Britain. Known infestations were discovered in New York (1996) and Chicago (1998) about 10 years after the beetle first entered the U.S. An infestation was also discovered in Austria in 2001, an estimated 2-3 years after its introduction into Austria.

The Asian Longhorned Beetle slowly kills trees over an estimated 3-5 year period, but the time may be longer for some tree species. In China, about 40% of the poplar plantations have been damaged (ca. 2.3 million ha.), over 240 cities or counties have been infested in 5 provinces alone (totaling 230,000 ha), and an estimated 50 million trees were cut down over a 3 year period in Ningxia Province alone (1991-1993). In the US, approximately 5,286 and 1,547 infested trees have been cut in New York and Chicago, respectively, as of May 2001. In Austria, CA. 47 infested trees have been cut, as of August 2001.

Asian Longhorned Beetles are invading new locations mostly by nursery trade and sea freight (container/bulk). However, they invade locally by infested fire wood, containers, pallets, and dunage. They also disperse to new areas by adults hitch-hiking on vehicles and self-propelled flight.
 
Portions of this article courtesy of: Global Invasive Species Database
Image of a Asian Longhorned Beetle (Photo from: www.bugwood.org Credit to: Michael Bohne)