The migration of the invasive pest known as the 'spotted lanternfly' to 22 states in the U.S. has sounded the alarm for farmers and gardeners. These pests, which cause serious damage to agricultural products, have now been observed in parts of the Northeast, Mid-Atlantic, Midwest, and Great Lakes regions. Local officials have advised the public to eliminate these pests immediately.
Serious Warnings from Officials
The Pennsylvania Department of Agriculture has publicly urged the public: "Kill them. Crush them, smash them. Just get rid of them." This warning has been issued due to the spotted lanternfly feeding on the sap of over 70 types of plants, particularly wine-producing grapevines. The heavy feeding by these pests causes stress to the plants and serious loss of crops, especially for vineyards.
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These pests, native to parts of Asia, particularly China, Vietnam, and India, are believed by experts to have entered the United States about a decade ago and are rapidly spreading. They were first observed in Pennsylvania in 2014, but now, with a significant increase in their numbers, the states of Massachusetts, Connecticut, Rhode Island, and the New York metro area have been fully impacted.
Spread to Southern and Western States
The presence of these pests has also reached southern states like South Carolina, Georgia, and Tennessee, and westward to Chicago, Illinois, and Des Moines, Iowa. According to the pest management map from Cornell University, 22 states are affected by these pests. Given that adult spotted lanternflies do not survive the winter and are killed by severe cold, the eggs of these pests can remain through the winter.
Julie Urban, a research professor in entomology at Penn State University, has warned that due to this year's mild fall weather, adults may continue feeding and laying eggs until November or even December. The eggs appear as sticky masses on trees, resembling clusters of white, gray, or brown balls.
Predictions for the winters of 2026-2027 indicate that many states grappling with these Asian pests are likely to experience less snow than in previous years.
According to Urban, "These pests are here to stay. Despite a population decline, lanternflies will not disappear." These pests do not only destroy trees and plants but also excrete sticky, honeydew-like substances on leaves, decks, cars, and garden furniture, causing further problems.
Officials in New Jersey have issued a formal statement urging the public: "If you see a spotted lanternfly, help us eliminate it! Crush the nymphs and adults of these pests." Similarly, the New York Department of Environmental Conservation has stated that these creatures must be eliminated immediately.
The U.S. Department of Agriculture has warned that if spotted lanternflies continue to spread, the country's fruit and forestry industries will be severely impacted. According to a 2019 study, the damage caused by these pests in Pennsylvania is estimated at around $50 million per year.
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