Clover Root Weevil
EntdeckenInsekten
Clover Root Weevil
sitona obsoletus
Meet the Clover Root Weevil (Sitona obsoletus), a tiny but highly influential insect that has made a name for itself in pastures and fields worldwide. Originally native to Europe, this small beetle has traveled globally, frequently establishing itself in places like New Zealand, where it poses a significant challenge to agricultural systems. This species is famous for its strict association with clover plants, which it relies on for both food and shelter throughout its life cycle. While adults munch on the leaves, leaving distinctive notches, their underground larvae feast on the vital nitrogen-fixing nodules of clover roots, disrupting the plant's ability to enrich the soil. Despite its reputation as an agricultural pest, the Clover Root Weevil is a fascinating subject of study in insect behavior, chemical ecology, and biological control.
Lebensraum: Found in temperate grasslands, agricultural pastures, lawns, and meadows where clover species are abundant.
Aussehen
The Clover Root Weevil is a small, robust beetle measuring between 4 and 6 millimeters in length. It features a short, broad snout typical of broad-nosed weevils and is covered in fine, overlapping scales that give it a dull grayish-brown or slightly copper-colored appearance. Running down its back, subtle lighter stripes can sometimes be seen under magnification. Its legs are relatively short and dark, and its body shape is slender and oblong, allowing it to blend seamlessly into the soil, plant litter, or foliage where it feeds and rests.
ReichAnimaliaStammArthropodaKlasseInsectaOrdnungColeopteraFamilieCurculionidaeGattungSitona
Kategorie
InsektenSeltenheit
Common
Gefahr
1/5 · Sehr gering
Snaps
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Interessante Fakten
Female Clover Root Weevils can lay up to 800 eggs during their lifetime, scattering them loosely on the soil near clover plants.
In New Zealand, the introduction of the parasitoid wasp Microctonus aethiopoides has successfully helped control this pest, saving the farming industry millions of dollars.
Their larval feeding on clover root nodules disrupts the symbiotic nitrogen-fixing relationship between the plant and Rhizobium bacteria, drastically reducing soil fertility.
Besondere Fähigkeiten
Fähigkeit
Nodule Targeting
Larvae selectively locate and burrow into the nitrogen-fixing nodules of clover roots, consuming the plant's nutrient reserves.
Fähigkeit
Thanatosis
When threatened, adult weevils pull in their legs and drop to the ground, feigning death to blend in with soil debris.
Fähigkeit
Notch Chewing
Adults possess specialized mouthparts that allow them to efficiently slice characteristic scalloped notches out of clover leaf margins.
Maße und Details
- Gewicht
- 0.000005+ kg
- Lebenserwartung
- 1+ Jahre
- Gelegegröße
- 100300+
- Brutzeit
- 10+ Tage
Ernährung und Fütterung
Adults feed exclusively on the foliage of clover and other legumes, while larvae consume the root systems and nitrogen-fixing nodules underground.
Hauptnahrung
- White Clover
- Red Clover
- Subterranean Clover
- Alsike Clover
Nahrungssuche
- Grazing Dietchangeswithage
Ökologische Zusammenhänge
host plant
White Clover
Trifolium repens
Primary larval and adult food source, which suffers root and leaf damage from infestation.
parasite
Microctonus aethiopoides
Microctonus aethiopoides
A parasitoid wasp introduced to control the weevil population by laying eggs inside adult weevils.
host plant
Red Clover
Trifolium pratense
An alternative food plant frequently damaged by adult and larval feeding.
Merkmale
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Sicherheit
Gefahr
1/5 · Sehr gering
Noch keine besonderen Sicherheitshinweise.
Häufig gestellte Fragen
Wie identifiziert man Clover Root Weevil?
Der einfachste Weg, Clover Root Weevil zu bestimmen, ist die Verwendung der Naturführer-App Snappit.
Was ist der/die/das gewicht von Clover Root Weevil?
0.000005+ kg
Was ist der/die/das lebenserwartung von Clover Root Weevil?
1+ Jahre
Was frisst Clover Root Weevil?
Adults feed exclusively on the foliage of clover and other legumes, while larvae consume the root systems and nitrogen-fixing nodules underground.
Wo findet man Clover Root Weevil normalerweise?
Found in temperate grasslands, agricultural pastures, lawns, and meadows where clover species are abundant.
Wie jagt Clover Root Weevil?
Grazing Dietchangeswithage
Was ist der/die/das gelegegröße von Clover Root Weevil?
100300+
Was ist der/die/das brutzeit von Clover Root Weevil?
10+ Tage
Snap-Karte
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Neueste Snaps
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