Seychelles Scale

icerya seychellarum

The Seychelles Scale (Icerya seychellarum) is a fascinating, yet highly destructive, giant scale insect that has spread throughout many tropical and subtropical regions of the world. Coated in a distinctively bright, golden-yellow and snowy-white wax, these insects live in dense colonies on the stems, leaves, and fruits of their host plants. While they are a notorious agricultural pest, particularly damaging to citrus, mango, and avocado trees, their complex life cycle and interactions with other organisms make them a compelling subject of ecological study. Originally described from the Seychelles, this resilient insect feeds by tapping into the nutrient-rich sap of host plants. The excess sugar they consume is excreted as sticky honeydew, which fosters a complex ecological web involving mutualistic ants and parasitic fungi. Their ability to rapidly colonize plants makes them a key focus for biological control programs worldwide.

Lebensraum: Found in tropical and subtropical agricultural orchards, botanical gardens, and disturbed forests, where they infest a wide variety of woody host plants.

Aussehen

A fully grown female Seychelles Scale typically measures up to 1 centimeter in length, featuring an oval, reddish-brown body that is heavily obscured by thick, powdery secretions of yellow and white wax. Radiating from its margins are long, glassy, hair-like waxy filaments that catch the light. The most striking visual cue is the rows of bright yellow or orange waxy tufts along the center and edges of its back, giving the insect a decorated, multi-colored appearance.

ReichAnimaliaStammArthropodaKlasseInsectaOrdnungHemipteraFamilieMonophlebidaeGattungIcerya

Seychelles Scale

Kategorie

Insekten

Seltenheit

Common

Gefahr

1/5 · Sehr gering

Snaps

Mach den ersten Snap!

Interessante Fakten

Despite their name, they are not native only to the Seychelles and have successfully invaded many tropical islands and mainland areas.

Their waxy secretions can form beautiful, glass-like needles that shimmer under direct sunlight.

They produce so much honeydew that infested plants often become covered in black sooty mold, which blocks photosynthesis.

Besondere Fähigkeiten

Secretes a thick layer of yellow and white wax that protects against predators, pesticides, and desiccation.

Produces a sugary fluid that attracts mutualistic ants, which protect the scale insect from predators in exchange for food.

Capable of reproducing without mating, allowing populations to rapidly explode in favorable conditions.

Maße und Details

Länge: 1 cm
Gelegegröße: 100-800
Brutzeit: 10-30 Tage

Ernährung und Fütterung

Feeds exclusively on plant phloem sap extracted directly from the vascular systems of host trees and shrubs.

Altersunterschiede: Nymphs and adult females feed continuously on plant sap, while the short-lived adult males do not feed at all.

Hauptnahrung

Citrus sap
Mango sap
Avocado sap
Guava sap

Nahrungssuche

Grazing

Ökologische Zusammenhänge

eaten by

Seychelles Ladybird Beetle

Rodolia chermesina

The Seychelles ladybird beetle is a specialized predator introduced to control scale populations.

host plant

Mango Tree

Mangifera indica

The scale insect infests the mango tree, sucking sap and weakening the plant.

mutualism

African Big-headed Ant

Pheidole megacephala

The African big-headed ant protects the scale insect from predators in exchange for sugary honeydew.

Merkmale

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Auch bekannt als

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Sammlungen

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Sicherheit

Gefahr

1/5 · Sehr gering

Noch keine besonderen Sicherheitshinweise.

Häufig gestellte Fragen

Wie identifiziert man Seychelles Scale?

Der einfachste Weg, Seychelles Scale zu bestimmen, ist die Verwendung der Naturführer-App Snappit.

Was ist der/die/das länge von Seychelles Scale?

1 cm

Was frisst Seychelles Scale?

Feeds exclusively on plant phloem sap extracted directly from the vascular systems of host trees and shrubs.

Wo findet man Seychelles Scale normalerweise?

Found in tropical and subtropical agricultural orchards, botanical gardens, and disturbed forests, where they infest a wide variety of woody host plants.

Wie jagt Seychelles Scale?

Grazing

Was ist der/die/das gelegegröße von Seychelles Scale?

100-800

Was ist der/die/das brutzeit von Seychelles Scale?

10-30 Tage