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Large pine weevil

Large pine weevil

Hylobius abietis

A species of Hylobius, Also known as Fir-tree weevil

Large pine weevil is a pest insect that especially affects young seedling trees (conifers in particular) by feeding on the bark and tissue layer of trees. Mating and reproduction both occur in the soil, and they also hibernate in the forest floor during the colder months. Natural regeneration techniques may be a good method of controlling these insects, rather than clear-cutting trees and replanting.

General Info About Large pine weevil
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Attributes of Large pine weevil
Colors
Black
Yellow
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
The Large pine weevil is non-toxic and generally doesn't pose a risk to human health. No need for excessive worry.
Borer
The Large pine weevil can bore into the wood and may damage its structure, or even harm the health of trees. Stay alert if you frequently observe it in your house.
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
The Large pine weevil 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 Large pine weevil
It is a pest of coniferous plantations in many European countries. It also occurs in Russia, Japan and China.
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Distribution Area of Large pine weevil
United Kingdom
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Appearance of Large pine weevil
The adult weevils are approximately 1 - 1.3 cm in length (without beak/snout) and are dark brown with patches of yellow or light brown hairs arranged in irregular rows on their elytra. The legs are black or deep red with a distinctive tooth on the femora and at the end of tibiae. The full grown larvae are typical for weevils, apodial, curved and are whitish, with brown head.
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How to Identify Large pine weevil?

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Life Cycle of Large pine weevil
Egg When the large pine weevil lays eggs, they are often round or oval and minute. Initially they are of a certain color, commonly white or creamy, but may darken over time. Eggs are generally laid in the habitat where larvae can easily access food upon hatching.
Larva After hatching, the large pine weevil larva is worm-like with a soft, elongated body differing drastically from the adult. Frequently lacking legs, it concentrates on feeding and growth, shedding its skin multiple times as it enlarges to accommodate its developing body.
Pupal The pupa stage is a transition where the large pine weevil is immobile and encased within a pupal covering. In this stage, internal reorganization occurs, transforming the larva into an adult. The insect is often quite vulnerable during this stage to predators and environmental factors.
Adult Emerging from the pupa, the adult large pine weevil'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. The coloration may serve as camouflage or mate attraction.
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Adult Size of Large pine weevil
1 - 1.3 cm
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Predators of Large pine weevil Larvae
Birds, small mammals, insects like ants and beetles
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Predators of Adult Large pine weevil
Birds, small mammals, insects like carnivorous beetles
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Scientific Classification of Large pine weevil
Tips for Finding Large pine weevil
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Youth Habitat of Large pine weevil
Forests and Woodlands, Rotting and Decaying Matter
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Habitat Preferences of Large pine weevil Through Different Life Stages
The larvae of large pine weevil live in the soil, typically found around the roots of various conifer species, such as pines and firs, where they feed on the decaying organic matter or root systems. As for the adult large pine weevil, one should look near the base of conifer trees or in areas with extensive logging residue, as they feed on the bark, shoots, and foliage of their host trees. Adults are often found on or near recently fallen or cut coniferous trees, which makes clear-cut areas or lumber yards likely places to find them. Therefore, searching for different development stages involves inspecting soil around tree roots and examining conifer tree stumps or logs for adults.
Are Large pine weevil harmful?
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Harmful Effects of Large pine weevil
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Hurt Plant

Adult and larval stages of large pine weevil severely damage a range of host plants by chewing plant tissues. The pests target roots and stems, leading to girdling, disrupted nutrient flow, and weakened plant structure. Infestations can result in significant mortality, especially in young trees and shrubs.

More Effects of Large pine weevil

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