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Diabrotica is a large, widespread genus of beetles in the family Chrysomelidae. Members of this genus include several destructive agricultural pest species , sometimes referred to as cucumber beetles or corn rootworms .
Spotted cucumber beetle A spotted cucumber beetle eating a leaf. Diabrotica undecimpunctata on goldenrod. 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.
The pupal stage is white and has the basic shape of the adult. Adult rootworms are about .25 inches (6.4 mm) long. Western corn rootworms are yellowish with a black stripe on each wing cover. Northern corn rootworm beetles are solid in color and vary from light tan to pale green. [2]
Cucumber beetle is a common name given to members of two genera of beetles, Diabrotica and Acalymma, both in the family Chrysomelidae. [1] The adults can be found on cucurbits such as cucumbers and a variety of other plants. Many are notorious pests of agricultural crops. The larvae of several cucumber beetles are known as corn rootworms.
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. [4]
Adults are most active in the morning and late afternoon. The beetle overwinters during the adult stage near buildings, wood lots or in fence rows. Overwintering adults become active once the temperature reaches 15-20 °C. Adults are long lived: 60 days in summer and up to 200 days in winter. Adults start ovipositing 2–3 weeks after emergence ...
Diabrotica balteata is a species of cucumber beetle in the family Chrysomelidae known commonly as the banded cucumber beetle. It occurs in the Americas, where its distribution extends from the United States to Colombia and Venezuela in South America. [1] It is also present in Cuba. [2] It is a pest of a variety of agricultural crops. [3] On ...
Diabrotica longicornis is a species of skeletonizing leaf beetle in the family Chrysomelidae. It is found in Central America and North America. It is found in Central America and North America. [ 1 ] [ 2 ] [ 3 ]