Spotted Lanternfly
Identification
Nymphs are black with white spots and turn red before transitioning into adults. The black nymphs can be seen as early as April and until July. Red nymphs can be seen from July until September.
Adults begin to appear in July and are approximately 1 inch long and ½ inch wide at rest, with eye-catching wings. Their forewings are grayish with black spots. The lower portions of their hindwings are red with black spots and the upper portions are dark with a white stripe.
In the fall, adults lay 1-inch-long egg masses on nearly anything from tree trunks and rocks to vehicles and firewood. They are smooth and brownish-gray with a shiny, waxy coating when first laid.
Risks the Spotted Lanternfly bring
to New York State
SLF pose a significant threat to New Jerseys agricultural and forest health. Adult and nymphs use their sucking mouthparts to feed on the sap of more than 70 plant species. This feeding by sometimes thousands of SLF stresses plants, making them vulnerable to disease and attacks from other insects. SLF also excrete large amounts of sticky "honeydew," which attracts sooty molds that interfere with plant photosynthesis, negatively affecting the growth and fruit yield of plants. New York's annual yield of apples and grapes has a combined value of $358.4 million, which could be greatly impacted by SLF. The full extent of economic damage this insect could cause is unknown at this time.
Although native insects also secrete honeydew, the size of SLF and the large populations that congregate in an area result in large accumulations of it. The sticky mess and the swarms of insects it attracts can significantly hinder outdoor activities. In Pennsylvania, where SLF populations are the densest, people can't be outside without getting honeydew on their hair, clothes, and other belongings.
How do I get rid of spotted lantern flies?
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