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(Scott Bauer / USDA)

The Country's Most Dangerous Beetles

Invasive beetles of various colors and sizes have infiltrated U.S. forests, despite efforts by government experts

Granulate-ambrosia-beetle-520-6

Granulate ambrosia beetle
(Maura McCarthy)

Native to: Tropical and subtropical Asia
Attacks: Several ornamental and fruit tree species, including Bradford pear, pecan, dogwood and willow
Already spread to: Africa and the South Pacific
First appeared in the United States: Near Charleston, South Carolina in the 1970s
Currently found in: Hawaii and the southeastern United States
Strange behavior: The beetles infuse the trees they attack with an ambrosia fungus for the bettle’s offspring to feed on

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