Asian Spinybacked Orbweaver
Asian Spinybacked Orbweaver
thelacantha brevispina
The Asian Spinybacked Orbweaver (Thelacantha brevispina) is a captivating spider renowned for its striking, crab-like appearance. Widespread across South and Southeast Asia, this small arachnid stands out due to its hardened, colorful abdomen adorned with six prominent, sharp spines. Unlike typical garden spiders, the females of this species build highly robust, vertical orb webs decorated with conspicuous white silk tufts, which may serve as a visual warning to prevent birds from flying through them. These industrious spiders are major insect predators, playing an essential role in regulating local pest populations in tropical forests, gardens, and shrubby areas. While their bizarre shape and vivid markings can make them look intimidating, they are completely harmless to humans.
生息地: Found in tropical and subtropical woodlands, scrublands, and coastal forests, frequently weaving webs between shrubs and low tree branches.
外見
Female Asian Spinybacked Orbweavers possess a broad, hard, crab-like abdomen that features a distinctive pattern of white, black, and orange markings, punctuated by six distinct, dark spines curving outward from the edges. The abdomen's dorsal side often displays two prominent white spots resembling eyes, contrasting sharply with the dark background. Females measure around 0.5 to 1.0 centimeter in length, whereas the cryptic males are significantly smaller, often measuring less than 0.3 centimeters, and lack the dramatic spines and bright coloration of their female counterparts.
界Animalia門Arthropoda綱Arachnida目Araneae科Araneidae属Thelacantha
カテゴリ
Invertebrate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
Males are extreme underdogs in size, weighing up to 100 times less than females, and must carefully court females to avoid being eaten during mating.
The distinct 'eyespot' pattern on the back of the spider's abdomen is a form of mimicry designed to confuse and scare away potential predators.
They rebuild or patch their webs almost daily to ensure the sticky silk remains effective at trapping prey in dusty tropical environments.
特殊能力
能力
Spiny Armor Protection
The hardened abdominal exoskeleton and sharp spines make the spider difficult and unpalatable for small predators like birds and lizards to swallow.
能力
Web Tuft Warning
They weave highly visible white silk tufts into their webs, which act as visual deterrents to prevent larger animals from accidentally destroying their hard work.
能力
Thermoregulatory Posturing
They can adjust their body orientation relative to the sun to absorb heat on cooler mornings or minimize direct exposure during intense tropical afternoons.
サイズと詳細
- 長さ
- 1 cm
- 体重
- 0.0001-0.0005 kg
- 寿命
- 1 年
- 一度の産卵数
- 100-300
- 抱卵期間
- 14-28 日
食性と食事
Feeds almost exclusively on small flying insects that fly into its sticky, vertical orb web.
年齢による違い: Spiderlings consume microscopic insects and pollen caught on the web, while adults target larger flying insects.
主な食物
- Mosquitoes
- Fruit flies
- Small moths
- Gnats
採餌方法
- Ambush
生態系とのつながり
hunts
Asian Tiger Mosquito
Aedes albopictus
Preys upon mosquitoes, helping control populations of disease vectors in tropical regions.
eaten by
Common House Gecko
Hemidactylus frenatus
Falls prey to common tropical wall geckos that hunt near lights and foliage where webs are constructed.
eaten by
Asian Mud Dauber Wasp
Sceliphron madraspatanum
Parasitized by specialized wasps that paralyze the spider to feed their developing larvae.
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
Asian Spinybacked Orbweaverを見分けるには？
Asian Spinybacked Orbweaver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。
Asian Spinybacked Orbweaverの長さは何ですか？
1 cm
Asian Spinybacked Orbweaverの体重は何ですか？
0.0001-0.0005 kg
Asian Spinybacked Orbweaverの寿命は何ですか？
1 年
Asian Spinybacked Orbweaverは何を食べますか？
Feeds almost exclusively on small flying insects that fly into its sticky, vertical orb web.
Asian Spinybacked Orbweaverは通常どこに生息していますか？
Found in tropical and subtropical woodlands, scrublands, and coastal forests, frequently weaving webs between shrubs and low tree branches.
Asian Spinybacked Orbweaverはどのように狩りをしますか？
Ambush
Asian Spinybacked Orbweaverの一度の産卵数は何ですか？
100-300
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