Small Adder's-Tongue vs small tortoiseshell

Ophioglossum azoricum compared with Aglais urticae

Key Differences

• Small Adder's-Tongue is Critically Endangered while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Small Adder's-Tongue	small tortoiseshell
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Arthropoda (Arthropods)
Class	Polypodiopsida (Polypodiopsida)	Insecta (Insects)
Order	Ophioglossales (Ophioglossales)	Lepidoptera (Butterflies & Moths)
Family	Ophioglossaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Ophioglossum	Aglais
Species	Ophioglossum azoricum	Aglais urticae

Conservation Status

Small Adder's-Tongue

CR — Critically Endangered

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Small Adder's-Tongue	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Small Adder's-Tongue

Habitat

Inhabits boreal forests and taiga within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, Iceland, Norway, Portugal, and Sweden. 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

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 5 countries:

🇧🇪 Belgium 🇮🇸 Iceland 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden