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Diabrotica undecimpunctata, the spotted cucumber beetle or southern corn rootworm, is a species of cucumber beetle that is native to North America. The species can be a major agricultural pest insect in North America. Spotted cucumber beetles cause damage to crops in the larval and adult stages of their life cycle.
The Western corn rootworm, Diabrotica virgifera virgifera, is one of the most devastating corn rootworm species in North America, especially in the midwestern corn-growing areas such as Iowa. A related species, the Northern corn rootworm, D. barberi , co-inhabits in much of the range and is fairly similar in biology.
Members of this genus include several destructive agricultural pest species, sometimes referred to as cucumber beetles or corn rootworms. Species
It includes two subspecies, Diabrotica virgifera virgifera (the western corn rootworm) and Diabrotica virgifera zeae (the Mexican corn rootworm). [2]
The corn earworm feeds on every part of corn, including the kernels. [34] Severe feeding at the tip of kernels allows entry for diseases and mold growth. [34] Larvae begin feeding on the kernels once they have reached third instar. [34] Larvae penetrate 9 to 15 cm into the ear, with deeper penetration occurring as the kernels harden. [34]
Diabrotica barberi, the northern corn rootworm, is a species of skeletonizing leaf beetle in the family Chrysomelidae. It is found in North America . [ 1 ] [ 2 ] [ 3 ] Adults feed on corn, and, when corn is unavailable, goldenrod pollen.
The fully grown larva is 0.75 to 1 inch (1.9–2.5 cm) in length. Larvae vary in color from light brown to pinkish gray and have conspicuous small, round, brown spots on each segment along the body. As they grow they reach between 2 and 20 mm. The larvae feed on the corn whorl and burrow into the stalk and ear.
Chaetocnema pulicaria, also known as the corn flea beetle [1] and clover flea beetle, [2] is a species of flea beetle from Chrysomelidae family, found in Texas, USA [3] and Canada. [ 4 ] Description