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Blue willow beetle

Blue willow beetle

Phratora vulgatissima

A species of Phratora

The blue willow beetle (Phratora vulgatissima), formerly Phyllodecta vulgatissima, is a herbivourous beetle of the family Chrysomelidae. It is black with metallic shine in nuances individually varying from a more common blue to a rarer bronze. It is distinguished from P. vitellinae by the latter more commonly displaying bronze nuances. The larvae undergo three instar stages from hatching to pupation.

General Info About Blue willow beetle
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Attributes of Blue willow beetle
Colors
Brown
Black
Blue
Habitat
Willows; poplars; under bark; coppice shoots; lesions; stems of Typha spp; rubble
Adult Food Sources
Salix alba (white willow leaves), populus tremula (aspen leaves), salix caprea (goat willow leaves), salix cinerea (grey willow leaves), populus nigra (black poplar leaves)
Larva Food Source
Salix alba (white willow leaves), populus tremula (aspen leaves), salix caprea (goat willow leaves), salix cinerea (grey willow leaves), populus nigra (black poplar leaves)
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
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Life Cycle of Blue willow beetle
Egg The eggs of blue willow beetle are typically laid on host plants. They start as small, oval-shaped, and can vary in color. This stage is solely for embryonic development, leading to the emergence of larvae.
Larva During this phase, blue willow beetle larvae are worm-like and lack developed wings. Larvae molt several times, consistently increasing in size. They consume large amounts of plant material, which is critical for their rapid growth.
Pupal In this transitional stage, blue willow beetle forms a pupa, which is generally immobile. The color and shape may vary as it camouflages with its surroundings. The insect reorganizes internally, developing into its adult form.
Adult Emerging from the pupa, the adult blue willow 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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Predators of Blue willow beetle Larvae
Birds, rodents, lady beetles, lacewings, predatory wasps, ground beetles
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Predators of Adult Blue willow beetle
Birds, rodents, spiders, mantis, insectivorous beetles, parasitic wasps, pathogenic fungi
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Interesting Facts About Blue willow beetle
Blue willow beetle can alter its gut bacteria to detoxify leaf poisons, a clever survival strategy not common among many other species.
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Scientific Classification of Blue willow beetle
Tips for Finding Blue willow beetle
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Adult Habitat of Blue willow beetle
Forests and Woodlands, Agricultural and Cultivated Areas
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Habitat Preferences of Blue willow beetle Through Different Life Stages
The eggs of blue willow beetle are typically laid on the underside of host plant leaves. Once hatched, the larvae often remain on the underside of leaves or move along the stems of the host plant to feed. Searching for these stages would involve inspecting the leaves and stems of host plants delicately to avoid disturbing them. Pupation usually occurs in the soil or in leaf litter near the host plant, so searching for pupae would require careful examination of the ground surrounding the plant. Adults can be found on and around the host plants, as they continue to feed on the leaves and may be spotted by visually scanning the foliage and surrounding vegetation.
Are Blue willow beetle harmful?
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Are Blue willow 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 Blue willow beetle
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Garden and Landscape Pest

Blue willow beetle can cause mild to severe damage to garden and landscape plants. Adults and larvae feed on the leaves and stems, causing defoliation and weakening of plants. In high numbers, they can significantly impair plant health and aesthetics, potentially impacting the enjoyment of gardens and green spaces.

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Hurt Plant

Adult and larval stages of blue willow beetle cause a range of damage from mild to severe, depending on population numbers. They non-selectively chew leaf tissues, compromising the plant's ability to photosynthesize, leading to reduced growth and, in severe cases, death.

More Effects of Blue willow beetle

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