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Adult butterflies and moths are harmless, but their caterpillars (larvae) are often serious pests of plants, plant products, and certain animal products. Millions of dollars are spent each year to combat injurious caterpillars. Some of the harmful species are the clothes moths, cabbage butterfly, corn borer, codling moth, gypsy moth, and cotton bollworm. There are more types of harmful moths than harmful butterflies. A few kinds of butterflies and moths are important in the pollination of flowers. The hummingbird moth, for example, pollmates certain flowers while gathering nectar; the yucca moth places a ball of pollen in the yucca flower where it has just laid eggs. On the whole, however, butterflies and moths play a much smaller role in pollination than do bees.

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16y ago

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