The emerald ash borer has been found in three additional Connecticut towns.
The bug has turned up in Cheshire, Oxford, and Middlebury.
“The emerald ash borer is responsible for the death and decline of tens of millions of ash trees from the mid-west to New York State and south to Tennessee,” said the state Deparment of Energy and Environmental Protection, in a statement.
“A quarantine has previously been established that regulates the movement of ash logs, ash materials, ash nursery stock, and hardwood firewood from within New Haven County to any area outside of that county,” the department said.
The bug was previously found in New Haven County in July of last year.
Ash trees make up as much as 15 percent of Connecticut’s forest. They are also common in populated areas.