Diabrotica undecimpunctata

The spotted cucumber beetle or southern corn rootworm (Diabrotica undecimpunctata) is a species of cucumber beetle that is native to North America. The species can be a major agricultural pest insect in North America. The spotted cucumber beetle has three subspecies, each with a different common name: In the adult form, it eats leaves of many crops, including squash, cucumbers, soybeans, cotton, beans, and corn. Adult beetles lay eggs in the soil, and larvae feed on the plant roots underground. Larval root feeding is often more damaging than feeding by adults. Adult beetles are greenish-yellow with six large black spots on each elytron. They are about 0.5 cm long. The larvae are yellowish and wormlike. This species is found throughout southern Canada, the continental USA, and the central highlands of Mexico.