
Pink Underwing
catocala concumbens
The Pink Underwing (Catocala concumbens) is a captivating member of the Erebidae family, renowned for its dramatic defense mechanism. By day, this moth rests quietly on the bark of willow and poplar trees, perfectly camouflaged. Its forewings present a delicate mosaic of soft gray, white, and charcoal, blending seamlessly with lichen-covered trunks. However, if a predator gets too close, the Pink Underwing flashes its hindwings, revealing a striking, brilliant pink coloration bordered by deep black. This sudden burst of color startles predators, giving the moth a crucial split-second to escape. Found predominantly in riparian corridors, woodlands, and suburban areas across eastern North America, this species is a favorite among moth enthusiasts. Its life cycle is intimately tied to willow and poplar trees, where the larvae feed before pupating into these exquisite adult specimens.
生息地: Found in damp woodlands, river valleys, and suburban areas rich in willow and poplar trees.
外見
The Pink Underwing is a medium-to-large moth with a wingspan ranging from 6 to 8 centimeters. Its closed forewings are characterized by a highly cryptic, pale gray or silvery-white coloration adorned with dark, jagged zig-zag lines that perfectly mimic tree bark. In stark contrast, the hindwings are a vivid, bright rosy-pink with a thick black band running parallel to the edge and a clean white fringe along the margin. Its body is robust and covered in dense, fuzzy gray hairs, while its underside shows a contrasting pattern of black and white bands.

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
The scientific species name concumbens translates from Latin to lying together, likely referring to how flatly the wings are held against tree trunks during rest.
To study this species, entomologists paint a sweet, fermented mixture of beer, molasses, and bananas onto tree trunks to lure the moths at night.
While resting, its bark-like forewings provide such perfect camouflage that the moth can remain completely undetected by predators in broad daylight.
特殊能力
Flash Coloration
Flashes its bright pink hindwings to startle and confuse potential predators when threatened.
Bark Crypsis
Possesses highly specialized forewing patterns that allow it to blend seamlessly into tree bark, making it nearly invisible when resting.
Scent Tracking
Utilizes highly sensitive chemical receptors in its antennae to locate fermenting sap and mates from long distances.
サイズと詳細
- 長さ
- 3-4 cm
- 翼開長
- 6-8 cm
- 体重
- 0.0001-0.0003 kg
- 寿命
- 1 年
- Top Speed
- 15 km/h
- 一度の産卵数
- 100-250
- 抱卵期間
- 10-14 日
食性と食事
Caterpillars feed on the foliage of willow and poplar trees, while adult moths feed on sweet, liquid substances such as fermented tree sap and rotting fruit.
年齢による違い: Larvae (caterpillars) feed exclusively on foliage, whereas adults feed only on liquid sugars and do not consume leaves.
主な食物
- Willow leaves
- Poplar leaves
- Fermented tree sap
- Overripe fruit
採餌方法
- Foraging
生態系とのつながり
Black Willow
Salix nigra
Provides foliage as the primary food source for the caterpillar stage of the moth.
Trembling Aspen
Populus tremuloides
Serves as an alternative host tree for oviposition and larval feeding.
Eastern Screech-Owl
Megascops asio
Acts as a natural nocturnal predator that feeds on active adult moths.
特徴
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別名
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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
Pink Underwingを見分けるには?
Pink Underwing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。
Pink Underwingの長さは何ですか?
3-4 cm
Pink Underwingの翼開長は何ですか?
6-8 cm
Pink Underwingの体重は何ですか?
0.0001-0.0003 kg
Pink Underwingの寿命は何ですか?
1 年
Pink Underwingのtop Speedは何ですか?
15 km/h
Pink Underwingは何を食べますか?
Caterpillars feed on the foliage of willow and poplar trees, while adult moths feed on sweet, liquid substances such as fermented tree sap and rotting fruit.
Pink Underwingは通常どこに生息していますか?
Found in damp woodlands, river valleys, and suburban areas rich in willow and poplar trees.
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