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The California Association of Winegrape Growers (CAWG) is urging other winegrowers to be on high alert for spotted lanternflies that are sharing egg masses, as some have been found that may produce adult bugs in the coming weeks — with peak populations expected in late summer or early fall.
“It’s terrifying to know that a small pest has the potential to devastate the livelihood of our growers and ravage an industry that is so vital to the California economy,” a CAWG representative told Fox News Digital this week.
California winemakers produce 80% of America’s wine. The state is also the fourth-largest wine producer in the world, according to the Wine Institute, a public policy advocacy organization located in California.
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“SLF’s [the spotted lanternfly’s] potential impact on vineyards could ripple through tourism, taxes and employment across the state,” the representative said.
Dr. Dan Suiter, University of Georgia’s Orkin Professor of Urban Entomology, told FOX Business that spotted lanternflies are not actually flies, but a plant-feeding insect called a true bug.
Spotted lanternfly egg masses were found in California, which has the California Association of Winegrape Growers and local vineyard owners speaking out about the high risk to the wine industry. (Andy Lavalley/Post-Tribune/Tribune News Service via Getty Images / Getty Images)
“They’re a plant-sucking insect, and they feed primarily on the Tree of Heaven, but their host range is over 100 different plants. Unfortunately, grapes [are] one of them,” said Suiter.
The California wine industry generates $73 billion in annual economic activity within the state of California and $170.5 billion for the U.S. economy, according to the Wine Institute.
Luis Magdaleno, Munselle Vineyards’ pest control adviser and viticulturist in Geyserville, California, said his team has not encountered the pest yet, but if they do, it will be “pretty bad.”
And, “education and early detection are key” for vineyard owners, according to the representative of the Winegrape Growers.
Munselle Vineyards, located in Geyserville, California, has over 1,500 acres of grapes. (Luis Magdaleno / Fox News)
“Learning to identify SLF in its various life stages is crucial for tackling this pest early if it arrives in California. Many counties have proactively removed Tree of Heaven, a preferred host plant for SLF, to reduce the risk of infestation,” the representative added.
Magdaleno said, “Everyone’s having to deal with [another pest] right now, the vine mealybug. It’s very similar, it starts sucking all the sugar, phloem and stuff out of the vine.”
“The regulations in California are definitely a little tighter than other states.”
He added that vineyards are able to keep certain bugs at bay, but there’s a great concern about spotted lanternflies.
“The lanterns are actual huge bugs, and they can be in the thousands on trees,” said Magdaleno.
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“There’s no pesticide in California that is registered to treat them,” he continued.
“If we do have to go ahead and treat them, unfortunately, the regulations in California are definitely a little tighter than other states. It can make it harder for us to deal with them.”
Luis Magdaleno describes himself as a “crop doctor.” “You go to the doctor and the doctor prescribes you something. For me, my patients are wine grapes. Every vine is a little different,” he told FOX Business. (Sam Bail / Fox News)
The California wine industry employs 422,000 California workers and attracts 25.2 million tourists to the state’s wine regions each year, according to the Wine Institute.
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“It’s already super expensive to treat all these pests,” Magdaleno said, adding if a pesticide chemistry was made, it would impact overhead costs for vineyards.
“While other states with established SLF [spotted lanternfly] populations encourage the public to ‘stomp it out,’ in California, we want to verify that it is indeed SLF to respond rapidly and accurately to the area where it was found,” said a CAWG re (Sam Bail | Getty Images / Getty Images)
If a spotted lanternfly is seen, the CAWG urges Californians to “Snag It: Capture the insect if possible. Snap a Picture: Take a clear photo of the suspected SLF. Report It: Contact the CDFA [California Department of Food and Agriculture] to report your findings.”
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FOX Business reached out to the CDFA for additional comment.
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