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Black blister beetle

Black blister beetle

Epicauta pensylvanica

A species of Burning blister beetles

Epicauta pensylvanica, known generally as the black blister beetle or black aster bug, is a species of burning blister beetle in the family Meloidae. The species name is sometimes spelled with a double "n", "Epicauta pennsylvanica".

Toxic to Humans
Toxic to Humans
Toxic to Animals
Toxic to Animals
Does the Black blister beetle cause allergies?
Allergenic
General Info About Black blister beetle
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Attributes of Black blister beetle
Habitat
garden; field; food crop
Adult Food Sources
Leaves, flowers, pollens, seeds, plant tissues
Larva Food Source
Grasshopper eggs, beetle eggs, other insect eggs, insect larvae
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
The Black blister 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
Not reported
Predatory
Not reported
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Species Status of Black blister beetle
Common
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Adult Size of Black blister beetle
7 - 18 mm
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Predators of Black blister beetle Larvae
Frogs, toads, birds, rodents
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Predators of Adult Black blister beetle
Birds, rodents, reptiles
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Interesting Facts About Black blister beetle
When threatened, black blister beetle can release a toxin called cantharidin, which can blister the skin of potential predators.
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Scientific Classification of Black blister beetle
Tips for Finding Black blister beetle
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Youth Habitat of Black blister beetle
Grasslands and Prairies, Agricultural and Cultivated Areas
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Habitat Preferences of Black blister beetle Through Different Life Stages
The eggs of black blister beetle are deposited in the soil. For larvae, the first instar, known as triungulins, may be found clinging onto flowers or on bees, as they are phoretic and search for grasshopper egg pods upon which they feed. The later larval stages develop underground feeding on the eggs and immature stages of grasshoppers. Pupation also occurs within the soil. Adults are commonly found on the foliage of various plants, especially those that are flowering, as they feed on pollen and nectar. To search for black blister beetle at different stages, one would look beneath the soil surface for eggs and larvae, on flowering plants for adults, and carefully inspect bees at flowers for triungulins.
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When is the Best Time to Observe Black blister beetle
The adult black blister beetle is most active during the warmer months, often being spotted in daylight hours, making late spring to early summer the best time to search for them.
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What is the Best Weather to Observe Black blister beetle
Adult black blister beetle are active on warm, sunny days, while overcast or rainy days may lead them to take shelter, making them harder to locate.
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How and Where Can You Find Black blister beetle at Different Life Stages
Larva To locate black blister beetle in the larval stage, search near the nests of their host species, usually solitary bees, where the larvae act as parasites. Look for small, white grubs or actively monitor bee nest sites.
Pupal Black blister beetle pupae might be buried in soil or hidden in debris near the host species nests. Careful excavation and turning over of topsoil or debris in potential pupation areas may reveal them.
Adult Finding adult black blister beetle is best done by searching flowering plants, especially those in open, sunny areas. Adults are often found feeding on pollen or nectar during the day.
Are Black blister beetle harmful?
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Are Black blister beetle harmful to humans?

Black blister beetle neither bites nor stings, and the cantharidin contained in it is highly toxic. Direct skin contact with black blister beetle does not poison people.
It should be noted that when the black blister beetle is frightened, it will secrete a small amount of cantharidin from the leg. The skin after contact will be red, swollen, painful, and burning, and blisters will appear within 48h. After waking up, many people will be confused by the blisters that somehow grew out of. Fortunately, the blisters caused by the black blister beetle are temporary. Most people's symptoms will disappear within a week, and most of the recovered skin will not leave unsightly scars.
Harmful Effects of Black blister beetle
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Toxic to Humans

Black blister beetle possess a defense mechanism that releases toxins called cantharidins which are harmful to humans. Though primarily a defense against predators, cantharidins can lead to skin irritation upon touch or complications if ingested. Larvae and adults are capable of secreting these toxins, and skin contact, can result in blisters or lesions. Accidental ingestion could cause severe gastrointestinal distress. Mild exposure usually results in topical discomfort, but high doses or prolonged exposure can have more serious health effects.

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Toxic to Animals

Black blister beetle can cause a range of reactions from mild irritation to severe allergic responses. The adult uses its sting to deliver venom, which can affect humans, mammals like dogs, birds, and even smaller bugs. While some animals may experience only minor discomfort, others, particularly humans, might have intense allergic reactions requiring medical attention.

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Does the Black blister beetle cause allergies?

Black blister beetle can cause allergies in a small number of people at both growth stages. Contact with its toxins can lead to allergic reactions ranging from mild to severe. Common symptoms include skin irritations. In assessing risk, consider individual sensitivity, as reactions vary among people. Avoid direct contact as a precaution.

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