Understanding Tree Pests: The Emerald Ash Borer, Asian Longhorn Beetle, and Gypsy Moth

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This informative piece examines three devastating tree pests: the Emerald Ash Borer, which has killed 20 million trees in Michigan, Ohio, and Indiana; the Asian Longhorn Beetle, native to China and introduced to the U.S. through infested packing materials; and the Gypsy Moth, which has been a threat since 1870, primarily affecting oaks and aspens. The article highlights the impact of these pests on forestry and ecosystems, as well as preventative measures like firewood quarantines. Special thanks to the USDA Forest Service for the provided information and photos.

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May 11, 2026

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Understanding Tree Pests: The Emerald Ash Borer, Asian Longhorn Beetle, and Gypsy Moth

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Tree Pests Creatures That Bug Our Trees Kyle Larson Botany 202
Emerald Ash Borer • Killed 20 million trees in Michigan, Ohio, and Indiana • Fire wood quarantines to prevent new infestations
Asian Longhorn Beetle • Native to China • Transported to United States in infested packing material
Gypsy Moth • Spread to U.S. in 1870 • Oaks and Aspens are most common hosts • Larva defoliate trees • Small mammals and birds are predators
Acknowledgements • Photos and information courtesy of the USDA Forest Service • forestry.about.com