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Spotted Cucumber Beetle

Spotted Cucumber Beetle

Diabrotica undecimpunctata

A species of Cucumber beetles

The spotted Cucumber Beetle (Diabrotica undecimpunctata) is an agricultural pest with a bright yellow body and dark spots. It causes damage to corn and other crops by feeding on roots, seedlings, and flowers. Its larvae are often called "rindworms" because they also damage the rind and skin of fruits.

General Info About Spotted Cucumber Beetle
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Attributes of Spotted Cucumber Beetle
Colors
Black
Yellow
Habitat
potato
Adult Food Sources
Corn (maize) pollen and silks, cucurbit blossoms, leaves of legumes, vegetable and ornamental plants, pollen of diverse flowering plants
Larva Food Source
Roots of corn (maize), small grains, sorghum, sugarcane, grass roots
Non-poisonous
The Spotted Cucumber Beetle is non-toxic and generally doesn't pose a risk to human health. No need for excessive worry.
Borer
Not reported
Pollinator
The Spotted Cucumber Beetle is often found near the corolla, where its fluffy hairs easily pick up pollen, assisting in the pollination of the plant.
Pest-Eating Predatory
Not reported
Phytophagous
The Spotted Cucumber Beetle feeds on plants, usually without causing significant harm. However, it's important to take the situation seriously if their numbers begin to increase significantly.
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing mouthparts
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Appearance of Spotted Cucumber Beetle
Adult beetles are greenish-yellow with six large black spots on each elytron. They are about 5 mm long. The larvae are yellowish and wormlike.
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How to Identify Spotted Cucumber Beetle?

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Life Cycle of Spotted Cucumber Beetle
Egg The spotted Cucumber Beetle begins as an egg, often oval-shaped and yellowish, laid in clusters or rows on host plants. At this stage, there's minimal movement, and the creature is vulnerable to environmental conditions and predators.
Larva After hatching, the larvae of spotted Cucumber Beetle are worm-like with distinct segmentation. They are voracious feeders, often a different color like pale or dark green for camouflage, and grow significantly, molting several times.
Pupal The spotted Cucumber Beetle pupates in a protected spot, undergoing a dramatic transformation. The immobile pupa may blend with the surroundings and will change in structure as the adult features form inside the protective casing.
Adult Emerging from the pupa, the adult spotted Cucumber Beetle is characterized by a hardened exoskeleton, wings, and mature reproductive organs. Their color is often bright, aiding in mate attraction and species identification, and their size is fully developed.
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Adult Size of Spotted Cucumber Beetle
5 - 7 mm
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Predators of Spotted Cucumber Beetle Larvae
Birds, frogs, toads, spiders, predacious beetles, ants
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Predators of Adult Spotted Cucumber Beetle
Birds, small mammals, spiders, predacious insects
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Interesting Facts About Spotted Cucumber Beetle
Spotted Cucumber Beetle can feed on more than 200 plant species, showcasing a remarkable dietary adaptability unlike most of its fellow beetles.
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Scientific Classification of Spotted Cucumber Beetle
Tips for Finding Spotted Cucumber Beetle
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Adult Habitat of Spotted Cucumber Beetle
Agricultural and Cultivated Areas, Urban and Suburban Areas, Forests and Woodlands, Grasslands and Prairies
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Habitat Preferences of Spotted Cucumber Beetle Through Different Life Stages
Eggs of spotted Cucumber Beetle are typically laid on or near host plants in soil. Larvae, once hatched, can be found underground feeding on roots. In the search for these larvae, one must inspect the root zones of host plants. Pupation occurs within the soil as well, where the insect transforms into its adult form. Adults emerge from the soil to mate and often feed on foliage. To observe adults, it is best to search on or around host plant leaves. Therefore, carefully examining the root zone and leafy areas of host plants could reveal the presence of spotted Cucumber Beetle at different developmental stages.
Are Spotted Cucumber Beetle harmful?
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Usually, the spotted Cucumber Beetle won't threaten or hurt humans. But remember that even a worm will turn. Remember to still be cautious.

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Are Spotted Cucumber Beetle harmful to humans?

Some colorful leaf beetles are actually toxic, and their beautiful appearance is warning predators: I am very dangerous, do not eat me! However, just observing with your eyes and touching the leaf beetle with your hand will not be poisoned.
Harmful Effects of Spotted Cucumber Beetle
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Agricultural Pests

Larvae of spotted Cucumber Beetle specifically target corn, feeding on roots and foliage which can lead to mild to severe damage. Minor infestations may reduce plant vigor, while heavy populations can result in significant yield loss. This pest also poses a risk to humans, as crop failures directly impact food supply and economic stability.

More Effects of Spotted Cucumber Beetle

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