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Asian Long-Horned Beetles a Threat To Maple Trees Across Indiana

The beetle is killing maple trees in the same way that the emerald ash borer is killing ash trees.

WEST LAFAYETTE, Ind. – You may be aware that the emerald ash borer has been destroying the population of ash trees across Indiana and the Midwest.  Now, you’re being warned of another beetle causing damage to maple trees.

Cliff Sadof, a Purdue Professor of entomology, says the Asian long-horned beetle is causing harm to shade trees.  He suggests that you check the maple trees on your property to see if they are infested in order to save other trees from being destroyed through infestation.

 “If you see an Asian long-horned beetle, you should report it,” said Cliff Sadof, a Purdue professor of entomology. “Early reports by private citizens have been critical to eradication efforts in Chicago, Ohio, New York and New Jersey.”

According to Sadof, the Asian long-horned beetle has not yet been found in Indiana, but it has been discovered near Cincinnati and Chicago.  His concern is that the spread of firewood from those areas may cause the beetle to nest and grow in population.

To report the beetle, Sadof recommends calling 1-866-NO-EXOTIC. Smartphone apps also are available athttps://apps.bugwood.org/apps/gledn/, where citizens can report suspected beetle infestations. 

According to the Purdue University’s Department of Entomology, the Asian long-horned beetle has the following characteristics:

  • Body is about 1 inch to 1 inch and a half in length.
  • Antennae, longer than the insect’s body, is banded in black and white.
  • Shiny jet black body that features random white spots.
  • Six legs, in some cases with bluish-colored feet.

The following is a list of signs that may determine whether a tree is infested:

  • Dime-sized or smaller round exit holes in the tree trunk or branches.
  • Shallow oval or round scars in the bark, where the adult beetle has chewed an egg site.
  • Sawdust-like materials, called frass, on the ground around the tree or on the branches.
  • Dead branches or limbs falling from an otherwise healthy-looking tree.

Sadof says you should check the water skimmers in your swimming pool for the Asian long-horned beetle as well since it is known for falling into the water.

 

Photo provided by Purdue University / Joe Boggs, Ohio State University

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