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Hazel-leaf roller

Hazel-leaf roller

Apoderus coryli

A species of Apoderus, Also known as Hazel leaf roller

Characterized by a strikingly curved rostrum, hazel-leaf roller is a deft architect in its larval stage, rolling leaves into secure shelters for its offspring. These resourceful creatures have a distinct life cycle, with larvae metamorphosing within their leafy cradles before emerging as adults with a pronounced sexual dimorphism, showcased by the males possessing somewhat larger mandibles and rostrums than their female counterparts.

General Info About Hazel-leaf roller
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Attributes of Hazel-leaf roller
Colors
Black
Red
Habitat
forest and edge; park; garden
Adult Food Sources
Hazel leaves, birch leaves, beech leaves, oak leaves, alder leaves
Larva Food Source
Hazel leaves, rolled leaf tissue, plant sap
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
The Hazel-leaf roller is non-toxic and generally doesn't pose a risk to human health. No need for excessive worry.
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
The Hazel-leaf roller 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 Hazel-leaf roller
It is widespread in most of Europe, in the East Palearctic ecozone (China, Japan) and in the Near East.
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Distribution Area of Hazel-leaf roller
Most of Europe, the eastern Palearctic realm, the Near East
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Life Cycle of Hazel-leaf roller
Egg The egg of the hazel-leaf roller is typically deposited on a leaf, starting life as a dormant organism. The egg's color may blend with the plant surface providing camouflage.
Larva The larva that emerges from the egg of the hazel-leaf roller is worm-like, a voracious feeder with a growing and molting exoskeleton. It may have a different color compared to the adult.
Pupal During this stage, the hazel-leaf roller is immobile and undergoes significant transformation within a protective case, reshaping its body and forming adult structures.
Adult Emerging from the pupa, the adult hazel-leaf roller'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 Hazel-leaf roller
6 - 8 mm
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Predators of Hazel-leaf roller Larvae
Birds, ants
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Predators of Adult Hazel-leaf roller
Birds, rodents, spiders, insectivorous mammals
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Interesting Facts About Hazel-leaf roller
The hazel-leaf roller intricately rolls leaves into cylinders, laying eggs inside, which provides a secure nursery for its larvae away from predators.
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Scientific Classification of Hazel-leaf roller
Tips for Finding Hazel-leaf roller
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Youth Habitat of Hazel-leaf roller
Forests and Woodlands
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Adult Habitat of Hazel-leaf roller
Forests and Woodlands
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How Can You Attract Hazel-leaf roller
Since hazel-leaf roller is a beetle, it may be attracted to certain fruits, tree leaves, or the sap which they often rely on for nourishment. One can use such plant materials local to hazel-leaf roller's natural habitat to bait traps.
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Habitat Preferences of Hazel-leaf roller Through Different Life Stages
The larvae of hazel-leaf roller typically develop inside plant tissue, such as leaves or stems, which the female rolls or folds into a secure environment for their growth. Searching for larvae requires inspecting these rolled or modified plant structures closely. The pupal stage of hazel-leaf roller is also likely found within these protective plant enclosures, often in the soil nearby the host plant or within leaf litter. Adult hazel-leaf roller can be found on or near their host plants, feeding on the leaves, where they also mate and lay eggs. To find adults, one should look on the host plants during warmer parts of the day when they are most active.
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When is the Best Time to Observe Hazel-leaf roller
The best time to find adult hazel-leaf roller would typically be during the active daytime hours or at dusk when these beetles are most active, and during their mating season when they are more abundant. For larvae, any time of day when the ground is moist and the temperature is moderate may lead to a higher likelihood of finding them.
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What is the Best Weather to Observe Hazel-leaf roller
Mild, warm weather without extreme heat or cold is usually most suitable for finding hazel-leaf roller in various stages of its life cycle. Light rainfall or post-rain conditions may also encourage these beetles to become more active and visible.
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How and Where Can You Find Hazel-leaf roller at Different Life Stages
Egg Hazel-leaf roller eggs are likely to be laid in the soil or under the bark of trees. To locate them, carefully sift through leaf litter or peel back loose bark from tree trunks, searching for small clusters of eggs.
Larva Hazel-leaf roller larvae tend to feed on plant material and may be found on or near their food source. Look for them by examining the undersides of leaves or within crevices in a host plant, during dawn or dusk when they are less likely to be hiding.
Pupal Hazel-leaf roller pupae can often be found near the ground in the soil or under debris. To locate them, gently explore the top layer of soil or leaf litter without disturbing the environment too much.
Adult Adult hazel-leaf roller can typically be found on or near their host plants. They are active during the day, so searching for them involves checking flowers, leaves, and tree bark. An evening light trap may also be useful for attracting and capturing them.
Are Hazel-leaf roller harmful?
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Harmful Effects of Hazel-leaf roller
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Hurt Plant

Hazel-leaf roller causes damage to plants primarily during its adult and larval stages. These insects chew plant tissues, especially leaves and fruits, which can result in defoliation and compromised fruit development. The severity of harm ranges from mild to severe, influenced by their population size.

More Effects of Hazel-leaf roller

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