Name: Spotted Cucumber Beetle (Diabrotica undecimpunctata)
Other name: Southern Corn Rootworm
Description: Diabrotica undecimpunctata is a species of cucumber beetle that is native to North America.
The spotted cucumber beetle has three subspecies, each with a different common name:
D. u. howardi – spotted cucumber beetle or southern corn rootworm
D. u. tenella – western cucumber beetle
D. u. undecimpunctata – western spotted cucumber beetle
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.
Distribution: This species is found throughout southern Canada, the continental USA, and the central highlands of Mexico.
Dymadex's blogs on bugs, including insects and arachnids. Insects are hexapod invertebrates like ants, beetles, bees, and flies. Arachnids are joint-legged invertebrates like spiders, scorpions, ticks, and harvestmen. Other organisms in this blog include centipede, millipede, and worms.
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