red underwing vs small tortoiseshell

Catocala nupta compared with Aglais urticae

Key Differences

• red underwing is Endangered while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	red underwing	small tortoiseshell
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Arthropoda (節足動物)	Arthropoda (節足動物)
Class same	Insecta (昆虫)	Insecta (昆虫)
Order same	Lepidoptera (チョウ目)	Lepidoptera (チョウ目)
Family	Erebidae	Nymphalidae (Brush-footed Butterflies)
Genus	Catocala	Aglais
Species	Catocala nupta	Aglais urticae

Evolutionary Relationship

red underwing and small tortoiseshell share a common ancestor at the Order level: Lepidoptera. (チョウ目)

Conservation Status

red underwing

EN — Endangered

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	red underwing	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

red underwing

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

small tortoiseshell

スモールトータスシェル(Aglais urticae)はIUCNレッドリストで準絶滅危惧(NT)に分類されている。絶滅危惧種に分類される一歩手前の段階で、保全措置がなければ脆弱になる可能性のある個体群を持つ。

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden