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Walnut Twig Beetle Confirmed In Butler County

The Ohio Department of Agriculture is asking people to check their trees for signs of the Walnut Twig Beetle and the Asian Longhorned Beetle.  Both insects have been detected in Southwest Ohio this month.
The Walnut Twig Beetle carries a fungus that causes Thousand Cankers Disease (TCD), which can kill walnut trees.  There is no known treatment for TCD.

Testing from samples in Butler County mark the first time TCD has been confirmed in Ohio.  Officials will set Walnut Twig Beetle traps in parts of Butler, Hamilton and Warren counties.

Symptoms of TCD include thinning crowns, yellowing or wilted leaves in the crown and limbs that died recently.

Ohio Department of Agriculture:

Asian Longhorned Beetles are large, shiny black insects measuring 1 to 1 inches long, not including antennae, with random white spots. Their white-banded antennae can be as long as the body itself on females and almost twice the body length on males. The invasive Asian Longhorned Beetle grows, reproduces in and kills trees such as maple, birch, horse chestnut, poplar, willow, elm, ash and buckeye.

Asian Longhorned Beetle was first confirmed in Ohio in 2011. The beetles were found to be infesting trees in Tate Township in Clermont County. ODA continues to work with the United States Department of Agriculture Animal and Health Inspection Service and other partners to eradicate the Asian Longhorned Beetle from Ohio.

Signs of Asian Longhorned Beetle infestation include perfectly round exit holes (about 3/8 to 1/2 inch in diameter) made by adult beetles when they emerge from trees, the pockmarks on tree trunks and branches where female beetles deposit eggs, frass (wood shavings and saw dust) produced by larval feeding and tunneling, early fall coloration of leaves or dead branches, and running sap produced by the tree at the egg laying sites, or in response to larval tunneling. Infested trees may also snap or break during high winds due to the wood being weakened by tunneling.
 
To report signs and symptoms on your trees, call ODA at 855-252-6450 or by email at plantpest@agri.ohio.gov.

Photo courtesy: SanduskyRegister.com
 

 

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