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Bean Leaf Beetle

Bean Leaf Beetle

Cerotoma trifurcata

A species of Cerotoma

The bean Leaf Beetle (Cerotoma trifurcata) earns its name through its love of beans. It also kind of looks like a bean, but its spotted body makes it so you aren't likely to confuse them with one. They are also known to transmit viruses to soybean crops that can affect their yields.

General Info About Bean Leaf Beetle
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Attributes of Bean Leaf Beetle
Colors
Black
Yellow
Orange
Habitat
legume
Adult Food Sources
Soybean, clover, alfalfa, cowpea, other legumes
Venomous
Not reported
Non-poisonous
The Bean Leaf Beetle is non-toxic and generally doesn't pose a risk to human health. No need for excessive worry.
Borer
Not reported
Pollinator
The Bean Leaf 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 Bean Leaf 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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Species Status of Bean Leaf Beetle
It can be found in the Eastern and West United States.
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Life Cycle of Bean Leaf Beetle
Egg During this initial phase, bean Leaf Beetle eggs are often laid on host plants. They are small, typically oval-shaped, and can vary in color. The eggs serve as a protected environment for the embryos to develop.
Larva Upon hatching, bean Leaf Beetle larvae emerge, markedly different from adults. These legged creatures voraciously feed on foliage, increasing in size rapidly. They frequently molt, shedding their exoskeletons to accommodate growth.
Adult Emerging from the pupa, the adult bean Leaf Beetle's development is marked by the presence of wings and functional reproductive organs. The body is fully formed and hardened, and the adult is mobile, focusing on reproduction.
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Adult Size of Bean Leaf Beetle
3.5 - 6 mm
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Predators of Bean Leaf Beetle Larvae
Birds, rodents, predatory beetles, parasitic wasps, spiders
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Predators of Adult Bean Leaf Beetle
Birds, rodents, spiders, predatory insects, small mammals
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Interesting Facts About Bean Leaf Beetle
An intriguing trait of bean Leaf Beetle is their ability to transmit a bacterial wilt, which can devastate crops, showcasing a complex interaction with their environment.
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Scientific Classification of Bean Leaf Beetle
Tips for Finding Bean Leaf Beetle
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Adult Habitat of Bean Leaf Beetle
Agricultural and Cultivated Areas
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Habitat Preferences of Bean Leaf Beetle Through Different Life Stages
Eggs of bean Leaf Beetle are typically laid on the undersides of host plant leaves or stems, often legumes, where they're sheltered. Larvae, after hatching, reside on or in the soil near the base of host plants to feed on roots or may climb the plant to feed on leaves. Pupation usually occurs in the soil where larvae have fed. Adults emerge and are often spotted on or near the host plants as they feed on foliage. To locate these insects, search for eggs on leaf undersides and larvae at the base of plants or in the soil, while adults can be spotted on the foliage.
Are Bean Leaf Beetle harmful?
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The bean Leaf Beetle carries pathogens that can infect other creatures and could potentially lead to disease. It is dangerous to humans, pets, or plants.

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Are Bean Leaf 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 Bean Leaf Beetle
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Hurt Plant

Bean Leaf Beetle damage plant tissues at both the larval and adult stages. They chew on leaves and stems, which can lead to defoliation and, in severe cases, plant death. The infestation severity ranges from mild to extreme, depending on the number of pests.

More Effects of Bean Leaf Beetle

Beneficial Effects of Bean Leaf Beetle
Discover the hidden benefits of insects
Explore how insects help as pollinators, pest predators, and biocontrol agents. From seed dispersal to decomposition, they play vital roles in our ecosystem.
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Pollinator
Pollinator
Attract Plant Feature
Color, Smell
Pollination Behavior Reason
Eat Pollen Or Nectar
Bean Leaf Beetle is primarily drawn to leguminous blooms by their vivid hues and alluring scents. This insect consumes the pollen as a food source, inadvertently collecting and transferring it between flowers in the process.
Common Questions People Also Ask
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