Pixie Foam vs small tortoiseshell

Stereocaulon pileatum compared with Aglais urticae

Key Differences

• Pixie Foam is Critically Endangered while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Pixie Foam	small tortoiseshell
Kingdom	Fungi (真菌界)	Animalia (动物界)
Phylum	Ascomycota (子囊菌门)	Arthropoda (节肢动物门)
Class	Lecanoromycetes (茶漬綱)	Insecta (昆蟲綱)
Order	Lecanorales (茶漬目)	Lepidoptera (鱗翅目)
Family	Stereocaulaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Stereocaulon	Aglais
Species	Stereocaulon pileatum	Aglais urticae

Conservation Status

Pixie Foam

CR — Critically Endangered

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Pixie Foam	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Pixie Foam

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Critically 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

小玳瑁蛱蝶(Aglais urticae)在IUCN红色名录中被列为近危(NT)物种。接近符合受威胁种标准，如无保护措施，种群可能变得脆弱。

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden