Two Maryland counties under quarantine amid spotted lanternfly invasion

Mike Groll / AP

In this 2011 file photo, an emerald ash borer larvae is removed from an ash tree. The borer is a beetle native to Asia. The "EAB" feeds on and kills native ash trees, and is expected to cause a near-100 percent mortality of the trees in the U.S.

Matt Rourke / AP

A spotted lanternfly at a vineyard in Kutztown, Pa. The spotted lanternfly has emerged as a serious pest since the federal government confirmed its arrival in southeastern Pennsylvania five years ago this week. (AP Photo/Matt Rourke)

Pamela Wood / Baltimore Sun Media Group

The invasive Chinese mitten crab, named for the dense patches of hair on their white-tipped claws, eats eggs of native fish and builds burrows that accelerate erosion, according to the Maryland Department of Natural Resources. Other invasive crabs seen in Maryland include the common littoral crab and the Japanese shore crab.

Dave Kettering / AP

The brown marmorated stink bug has become a common insect in the Maryland area after they crashed the U.S. from Asia in the 1990s.

AMY DAVIS / Baltimore Sun

The mute swan is the largest bird found on the waters along the Chesapeake Bay. They are native to Europe and Asia, but have found year-round habitat around the Bay and in the Susquehanna River valley, according to The Cheapeake Bay Program.

Adrian Higgins/Washington Post

Spotted lanternfly nymphs are captured by a sticky tree band at Fort Collier in Winchester, Va.

JED KIRSCHBAUM / Baltimore Sun

The rusty crayfish, native to portions of the Ohio River, was introduced through the release of unused bait by anglers, according to the Maryland Department of Natural Resources. The aggressive species displaces native species and eats the eggs of game fish. Another invasive species, the virile crayfish, has also been seen in Maryland.

Karl Merton Ferron / Baltimore Sun

Phragmites sway in the breeze at West Covington Park in front of the Vietnam Veterans Memorial Bridge, known by many as the Hanover Street Bridge. The common reed can grow and spread so quickly that it crowds out native vegetation, according to the Chesapeake Bay Program.

Elizabeth Malby / Baltimore Sun

A tenacious water weed called water chestnut was nearly erradicated in the 60s but is present in the Bird and Sassafras rivers in Maryland. The plant produces these spiky seed pods.

RON EDMONDS / AP

Cicadas overwhelm tree branches across Maryland once every 17 years, like clockwork. Scientists as of last year were expecting their return in 2021.

Matt Rourke / AP

In this Thursday, Sept. 19, 2019, photo, a spotted lanternfly sets on a tree in Kutztown, Pa. The spotted lanternfly has emerged as a serious pest since the federal government confirmed its arrival in southeastern Pennsylvania five years ago this week. (AP Photo/Matt Rourke)

Jeremy Papasso / AP

Goldfish, the benign and popular pet, can do damage in ecosystems, including in Maryland. They eat frog eggs and tadpoles, and compete with native fish that provide food for birds and turtles.

Chris D. Dollar / Capital Gazette

Flocks of non-migrating Canada geese have become established throughout Maryland and other Atlantic flyway states.

Courtesy of Maryland Department of Natural Resources

Zebra mussels are native to Europe, but have come to North America — likely in the ballast water from a ship. In 2002, a population was found in the Susquehanna River. They've since spread further in Maryland, according to the Chesapeake Bay Program.

Kim Hairston / Baltimore Sun

The Northern snakehead was discovered in a Crofton pond in 2000 and has since spread to other bodies of water around Maryland. They feed on native species. Local anglers must kill them if caught.