Beet Armyworm Moth

spodoptera exigua

The Beet Armyworm Moth (Spodoptera exigua) is a small, drab-colored moth with a significant global impact as an agricultural pest. While the adult moths are relatively inconspicuous, their larval stage, known as the beet armyworm, is notorious for its voracious appetite and wide host range, feeding on hundreds of different plant species. This species is highly adaptable and opportunistic, thriving in a variety of environments from agricultural fields to home gardens. Its ability to rapidly reproduce, migrate long distances, and develop resistance to pesticides makes it a formidable challenge for farmers worldwide, leading to substantial economic losses in crops like cotton, tomatoes, and various vegetables. Despite its pest status, it plays a role in the ecosystem as a food source for natural predators and parasitoids.

生息地: Found predominantly in agricultural fields, cultivated lands, and gardens, as well as disturbed areas and weedy patches where host plants are abundant.

外見

Adult Beet Armyworm Moths are relatively small, with a wingspan typically ranging from 2 to 3 cm. Their forewings are mottled gray-brown, often featuring an obscure kidney-shaped spot near the center and a pale, irregular band towards the outer margin. The hindwings are a translucent pearly white, sometimes with a faint brown border. The larvae, or armyworms, vary considerably in color depending on their diet and age, ranging from pale green to dark gray or nearly black, often with a prominent dark stripe running along each side of their body and a lighter stripe above it. They reach up to 3 cm in length when fully grown.

界Animalia門Arthropoda綱Insecta目Lepidoptera科Noctuidae属Spodoptera

Beet Armyworm Moth

カテゴリ

昆虫

レア度

Common

危険度

1/5 · 非常に低い

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おもしろい事実

It has developed resistance to a wide array of insecticides, making its management particularly challenging for farmers.

The Beet Armyworm is considered one of the top 10 most damaging agricultural insect pests worldwide due to its broad host range and rapid reproduction.

The species name 'exigua' means 'small' or 'meager' in Latin, referring to its relatively small size compared to some other moth species.

Unlike many caterpillars, beet armyworm larvae often feed in groups when young, skeletonizing leaves, but become solitary as they mature.

特殊能力

The larval stage has an extremely broad diet, feeding on over 100 different plant species from many botanical families, allowing it to thrive in diverse agricultural settings.

Adult moths are strong fliers and can migrate hundreds or even thousands of kilometers, enabling them to colonize new areas and escape unfavorable conditions.

This species has a short generation time, allowing for multiple generations per year, which contributes to its ability to quickly build large populations and cause significant crop damage.

サイズと詳細

長さ: 1 cm
翼開長: 2-3 cm
体重: 0.00005-0.0001 kg
寿命: 0 年
一度の産卵数: 300-1000
抱卵期間: 2-5 日
渡りの距離: 1500 km

食性と食事

The larval stage of the beet armyworm moth is polyphagous, feeding on the leaves, fruits, and growing points of a wide variety of plants. Adult moths primarily feed on nectar from various flowering plants.

年齢による違い: Larvae are defoliators and fruit feeders, while adults sustain themselves on nectar for energy and reproduction.

主な食物

Cotton
Tomatoes
Alfalfa
Sugar beets
Peppers
Nectar

採餌方法

Foraging

生態系とのつながり

host plant

Cotton

Gossypium hirsutum

Larval host plant

host plant

Tomato

Solanum lycopersicum

Larval host plant

parasite

Cotesia marginiventris

Parasitizes larvae, regulating populations

eaten by

Convergent Lady Beetle

Hippodamia convergens

Predates on larvae and eggs

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

Beet Armyworm Mothを見分けるには？

Beet Armyworm Moth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。

Beet Armyworm Mothの長さは何ですか？

1 cm

Beet Armyworm Mothの翼開長は何ですか？

2-3 cm

Beet Armyworm Mothの体重は何ですか？

0.00005-0.0001 kg

Beet Armyworm Mothの寿命は何ですか？

0 年

Beet Armyworm Mothは何を食べますか？

Beet Armyworm Mothは通常どこに生息していますか？

Found predominantly in agricultural fields, cultivated lands, and gardens, as well as disturbed areas and weedy patches where host plants are abundant.

Beet Armyworm Mothはどのように狩りをしますか？

Foraging