State officials say an emerald ash borer has been found in a residential tree in the southwestern Iowa city of Creston.
The announcement Thursday marked the fifth location where the beetle has been found in Iowa. It's the first time the insect has been spotted in western Iowa.
The other emerald ash borer infestations were in Allamakee County in 2010, followed by Des Moines County, Jefferson County and Cedar County in 2013.
To slow the spread of the insect, officials ask residents not to move firewood across county or state lines, which would limit the most common way ash borers cover large distances.
The small green wood boring beetle typically kills trees with two years, and an entire community's ash tree population can be wiped out within seven years.
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