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| Cinnabar moth caterpillars feed on tansy ragwort plants in a field near Elkton in rural western Oregon on Friday, July 6, 2018. The cinnabar moth was introduced to North America to help control invasive noxious ragwort plants. |
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| The caterpillars buildup toxins in their bodies while feeding on the weeds and their striking coloration is believed to warn predators of their unpalatability. |
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