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Emerald ash borer found in Tama, Marshall counties

The invasive insect has been found in 55 Iowa counties since 2010

(File photo) Larval galleries made by the emerald ash borer larvae can be seen on a recently inspected ash tree at the I-380 northbound rest stop in Cedar Rapids on Monday, Oct. 19, 2015. (Liz Martin/The Gazette)
(File photo) Larval galleries made by the emerald ash borer larvae can be seen on a recently inspected ash tree at the I-380 northbound rest stop in Cedar Rapids on Monday, Oct. 19, 2015. (Liz Martin/The Gazette)

Emerald ash borer, an invasive insect notorious for killing ash trees, has been found in Tama and Marshall counties for the first time, state officials said Wednesday.

The insect was detected in ash trees by a landowner in a rural area north of Le Grand, the Iowa Department of Agriculture and Land Stewardship said. The presence of Emerald ash borer in Tama and Marshall counties means the insect has been found in 55 of Iowa’s 99 counties since 2010.

Emerald ash borer was first found in Cedar Rapids city limits in 2015, and again in July 2017. It was also detected in parts of Johnson County, including Coralville and Iowa City, in 2016.

The beetle is native to eastern Asia. Its larvae kill ash trees by burrowing into bark and blocking nutrients from flowing to the rest of the tree. It’s spread has been partially blamed on the transportation of non-native firewood. State officials suggest Iowans use locally-sourced firewood and burn it in the same county in which it was purchased.

More information on the insect and management options are available at IowaTreePests.com.

l Comments: (319) 398-8366; matthew.patane@thegazette.com

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