small tortoiseshell vs White River Crayfish

Aglais urticae compared with Procambarus acutus

Key Differences

• small tortoiseshell is Near Threatened while White River Crayfish is Not Evaluated.

Taxonomic Classification

Rank	small tortoiseshell	White River Crayfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class	Insecta (Insects)	Malacostraca (Crustaceans)
Order	Lepidoptera (Butterflies & Moths)	Decapoda (Decapoda)
Family	Nymphalidae (Brush-footed Butterflies)	Cambaridae
Genus	Aglais	Procambarus
Species	Aglais urticae	Procambarus acutus

Evolutionary Relationship

small tortoiseshell and White River Crayfish share a common ancestor at the Phylum level: Arthropoda. (Arthropods)

Conservation Status

small tortoiseshell

NT — Near Threatened

White River Crayfish

NE — Not Evaluated

Physical Characteristics

Attribute	small tortoiseshell	White River Crayfish
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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.

White River Crayfish

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Found across Europe (6 countries).

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 🇫🇷 France 🇳🇱 Netherlands 🇳🇴 Norway 🇸🇪 Sweden 🇬🇧 United Kingdom