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Stem Miner Weevil

Stem Miner Weevil

Mecinus pyraster

A species of Mecinus

Mecinus pyraster is a species of weevil native to Europe.

General Info About Stem Miner Weevil
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Attributes of Stem Miner Weevil
Colors
Black
Habitat
Meadow
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing mouthparts
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Life Cycle of Stem Miner Weevil
Egg The tiny, oval eggs of stem Miner Weevil are often laid individually or in batches on host plants. They are usually hidden within plant tissues and can be variably colored to camouflage with their surroundings.
Larva The larva of stem Miner Weevil is legless and grub-like with a distinct head. Usually pale or white, the larva can dramatically differ in size as it grows, undergoing multiple molts and typically feeding voraciously on plant matter.
Pupal Stem Miner Weevil's pupation occurs in a protective cocoon or cell within the host plant. The pupa stage exhibits immobility, and, within, the insect's adult features like wings and legs are visibly forming as it undergoes significant transformation.
Adult The adult stem Miner Weevil emerges with hardened exoskeleton, distinctively weevil-like snout, and functioning wings hidden under elytra. It displays sexual dimorphism, generally darker hues, and is no longer substantially changing in size or form.
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Predators of Stem Miner Weevil Larvae
Birds, rodents, predatory beetles, spiders
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Predators of Adult Stem Miner Weevil
Birds, rodents, predatory beetles, spiders
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Interesting Facts About Stem Miner Weevil
Members of the stem Miner Weevil species exhibit remarkable plant mimicry, with body markings that make them nearly indistinguishable from their preferred host vegetation.
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Scientific Classification of Stem Miner Weevil
Class
Bugs
Icon allow
Order
Beetles
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Genus
Mecinus
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Tips for Finding Stem Miner Weevil
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How Can You Attract Stem Miner Weevil
Adult stem Miner Weevil primarily feed on the foliage of their host plants, so using these plants or their parts can act as effective lures.
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Habitat Preferences of Stem Miner Weevil Through Different Life Stages
The larvae of stem Miner Weevil typically develop within the stems of their host plants, hence searching for these early stages requires examining the interior of stalks, particularly of the yellow toadflax. Adults, having undergone complete metamorphosis, are usually found on or near these same host plants, feeding on leaves and stems. To find the various growth stages, carefully dissect stalks for larvae, and closely inspect leaves and stems for the adults, especially during late spring to summer when they are most active.
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When is the Best Time to Observe Stem Miner Weevil
Early morning or late afternoon when temperatures are cooler may be the best times to find active stem Miner Weevil.
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What is the Best Weather to Observe Stem Miner Weevil
Stem Miner Weevil may be more easily found on warm, humid days, but sheltering during hot midday sun or heavy rain.
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How and Where Can You Find Stem Miner Weevil at Different Life Stages
Egg Eggs of stem Miner Weevil are typically laid within the tissues of their host plant. Searching by carefully examining the host plant's stems, leaves, or flowers for tiny, inserted eggs may yield results.
Larva Larvae of stem Miner Weevil bore into stems and may cause visible galls or deformation. Inspecting the host plant for these signs and then gently dissecting the affected areas may reveal the larvae.
Pupal Stem Miner Weevil pupae may be nestled within the plant tissues or soil close to their host plants. Locating them involves gentle excavation around the host plant's base, taking care not to damage the pupae.
Adult Stem Miner Weevil adults can often be spotted on the host plants they feed and mate on. Observing the host plant during a cooler part of the day should yield encounters with adults that are less active and therefore easier to approach.
Are Stem Miner Weevil harmful?
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Harmful Effects of Stem Miner Weevil
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Hurt Plant

When stem Miner Weevil attacks plantains (Plantago genus), it chews on the plant tissues, specifically targeting stems and leaves. This feeding behavior disrupts the plant's capability to transport nutrients and water, leading to wilted, discolored foliage, and can hinder overall plant growth, reducing photosynthesis and plant vigor.

More Effects of Stem Miner Weevil

Common Questions People Also Ask
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