An isolated pocket of Spotted Lanternfly in Allentown has prompted state officials to expand a quarantine zone to include the city, as well as seven other municipalities throughout Lehigh and Montgomery counties, state officials said.

The seven other municipalities include Whitehall, South Whitehall, Upper Saucon, and Lower Milford townships in Lehigh County, and Lower Pottsgrove, Upper Frederick, and Marlborough townships in Montgomery County.

The Spotted Lanternfly is an inch-long black, red and white spotted pest and is native to China, India, Japan and Vietnam. It is an invasive species in Korea, where it has attacked 25 plant species that also grow in Pennsylvania.

The pest had not been found in the United States prior to its initial detection in Berks County in the fall of 2014.