Asian Longhorned Beetle
Asian Longhorned Beetle
The larvae of this big black-and-white beetle feed on many different types of hardwood trees. Efforts to stop its spread are essential but very costly.
Leaves from a sugar maple. All maples are eaten by the Asian longhorned beetle but Norway, red, silver, sugar, sycamore maple, and boxelder are tasty to the beetle!
The American elm tree—another delicious snack for the beetles!
Leaves from a European white birch. Gray and river birches are also eaten by these beetles.
Here is a photo of a white willow, but this beetle also eats weeping, pussy, and black willows.
The horse chestnut tree is a tasty snack for Asian longhorned beetles.
Cross-section of a tree trunk showing the damage caused by a burrowing larva.
This tree trunk has tunnels in it from beetles feeding on the wood.
Tree trunk with damage from feeding larvae.
A perfectly round hole created by an adult Asian longhorned beetle chewing its way out of a tree.
The female adult beetle chews a small hole into the bark where she will lay her eggs.
A tree trunk showing several exit holes and egg sites.
Sawdust-like material that the beetle pushes out of the tree as it burrows.
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Sugar maple leaves: John Ruter, University of Georgia, Bugwood.org; Asian longhorned beetle: Robert Mitchell, University of Wisconsin.; Asian longhorned beetle life cycle: Michael Bohne, UVM.; Pupa: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, Bugwood.org.; Larva: Joe Boggs, Ohio State University, Bugwood.org. ; Eggs: Melody Keena, USDA Forest Service, Bugwood.org.; Sugar maple leaves: Plant image library, Flickr.com. ; American elm leaves: Paul Wray, Iowa State University, Bugwood.org. ; European birch leaves, white willow leaves: Robert Vidéki, Doronicum Kft., Bugwood.org.; Horse chestnut leaves: Rob Routledge, Sault College, Bugwood.org. ; Tree trunk cross section: E. Richard Hoebeke, Cornell University, Bugwood.org. ; Tree trunk tunnels: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org.; Larvae damage: Thomas B. Denholm, New Jersey Department of Agriculture, Bugwood.org. ; Round hole: USDA, Flickr.com.; Chewed bark: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org.; Trunk exit holes: Pennsylvania Department of Conservation and Natural Resources - Forestry, Bugwood.org. ; Frass: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org.