Bladder Fern vs small tortoiseshell

Cystopteris fragilis compared with Aglais urticae

Key Differences

• Bladder Fern is Not Evaluated while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Bladder Fern	small tortoiseshell
Kingdom	Plantae (bitki)	Animalia (hayvan)
Phylum	Tracheophyta	Arthropoda (Eklem bacaklılar)
Class	Polypodiopsida (Polypodiopsida)	Insecta (böcek)
Order	Polypodiales (Polypodiales)	Lepidoptera (Pul kanatlılar)
Family	Cystopteridaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Cystopteris	Aglais
Species	Cystopteris fragilis	Aglais urticae

Conservation Status

Bladder Fern

NE — Not Evaluated

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Bladder Fern	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bladder Fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (Canada, United States), and South America (Colombia).

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.

Bladder Fern

The Bladder Fern (Cystopteris fragilis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

small tortoiseshell

small tortoiseshell (Aglais urticae) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇫🇷 France 🇮🇸 Iceland 🇳🇴 Norway 🇸🇪 Sweden