Is New Jersey’s Spotted Lanternfly Population Dwindling?

Source: NJ 101.5 Radio

A relatively new nuisance for the Garden State appears to be less visible in 2023, but it’d be too soon to declare victory over the spotted lanternfly.

New Jersey doesn’t officially track the presence of the spotted lanternfly on a yearly basis, but, due to reports from experts and residents, officials believe that areas of the state that had huge populations in the past are seeing very low numbers in 2023.

In fact, the Asia-native insect is here to stay. Experts’ ultimate goal is to just get the invasive species down to levels that aren’t bothersome to people or detrimental to crops and trees.

“They’re still there, but you’re just not seeing as many of them,” said Saul Vaiciunas, plant pathologist with the New Jersey Department of Agriculture (NJDA).

Vaiciunas said the fluctuation may have to do with the supply of the bug’s favorite food source: the tree of heaven. If it’s depleted, the winged planthoppers may be searching for the tree elsewhere.

The New Jersey Department of Agriculture is hearing reports of high populations in Bergen County, as well as eastern Monmouth and Ocean counties.

The state applies treatment at “priority locations” such as seaports, airports, and train yards, Vaiciunas said. As of right now, it’s not fully understood why the populations are fluctuating the way they are,” Vaiciunas said.

The first U.S. spotted lanternfly sighting was recorded in 2014, in Pennsylvania. New Jersey populations were first detected in 2018, according to the New Jersey Agricultural Experiment Station at Rutgers.

Because the spotted lanternfly has since established populations in every New Jersey county, the state is no longer asking residents to report sightings. But the public is still urged to crush the adults and nymphs, and scrape egg masses from trees and other surfaces in the winter.

“We’re never going to completely eradicate spotted lanternfly,” Vaiciunas said. “The light at the end of the tunnel would be biological control.”

Researchers are working to identify a natural predator that can make a significant dent in the spotted lanternfly population stateside. Any known natural predators aren’t found in the United States. Before releasing them into the environment, researchers would want to ensure that the predators wouldn’t prefer other insects over the spotted lanternfly, or go after U.S.-native plants and trees.

Tom's River: Ocean Of Love For Children's Cancer Family Night Sept. 20
Peptic Ulcer Postpones Bruce Springsteen's September Tour Plans