A six-legged threat has eight New Jersey counties under quarantine, Alaa Elassar reports for CNN. An invasive insect called the spotted lanternfly has spread to the Garden State. In total, the insect has infestations in four states and has been found in eight. Many affected counties have imposed quarantines to reduce the spotted lanternfly’s spread.

That means that residents need to check their vehicles for spotted lanternflies before they travel—the insect is an “excellent hitchhiker and has been known to ride on any kind of transportation,” according to a statement by the New Jersey Department of Agriculture.