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Any of several leaf beetles (genus Diabrotica) that are important pests. They are greenish yellow, marked with black spots or stripes, and 0.1–0.5 in. (2.5–11 mm) long. The striped cucumber beetle and spotted cucumber beetle both feed on garden plants, and their larvae feed on the roots.
This entry comes from Encyclopædia Britannica Concise. For the full entry on cucumber beetle, visit Britannica.com.