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.

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

外見

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.

界Animalia門Arthropoda綱Insecta目Hemiptera科Monophlebidae属Icerya

Seychelles Scale

カテゴリ

昆虫

レア度

Common

危険度

1/5 · 非常に低い

スナップ

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おもしろい事実

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.

特殊能力

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.

サイズと詳細

長さ: 1 cm
一度の産卵数: 100-800
抱卵期間: 10-30 日

食性と食事

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

年齢による違い: Nymphs and adult females feed continuously on plant sap, while the short-lived adult males do not feed at all.

主な食物

Citrus sap
Mango sap
Avocado sap
Guava sap

採餌方法

Grazing

生態系とのつながり

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.

特徴

このオブジェクトにはまだ特徴バッジが割り当てられていません。

別名

まだ別名はありません。

コレクション

テーマが追加されると、このオブジェクトのコレクションがここに表示されます。

安全性

危険度

1/5 · 非常に低い

まだ特別な安全上の注意はありません。

よくある質問

Seychelles Scaleを見分けるには？

Seychelles Scaleを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。

Seychelles Scaleの長さは何ですか？

1 cm

Seychelles Scaleは何を食べますか？

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

Seychelles Scaleは通常どこに生息していますか？

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

Seychelles Scaleはどのように狩りをしますか？

Grazing

Seychelles Scaleの一度の産卵数は何ですか？

100-800

Seychelles Scaleの抱卵期間は何ですか？

10-30 日