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LEARN HOW TO STOP THE INVASIVE SPOTTED LANTERNFLY
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Spiders are beneficial creatures that feed on all sorts of arthropods, including insects. About 3,000 species of spiders are found in the United States. Spiders rarely bite people, and most species are harmless. However, a few species of spiders produce bites that may have serious medical implications for humans. This full-color publication discusses the more common and important spider species in Pennsylvania. Photographs are also provided.