The emerald ash borer (Agrilus planipennis) is a beetle native to East Asia, including China, eastern Russia, Mongolia, Taiwan, Japan, and Korea. It was introduced to North America in the 1990s via wooden shipping materials. Since then, it has become a highly destructive invasive species, responsible for the death of hundreds of millions of ash trees in the United States and Canada. It was detected in Hungary and Slovakia in 2026.
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