Rust Colored Crab vs small tortoiseshell

Geothelphusa ferruginea compared with Aglais urticae

Key Differences

• Rust Colored Crab is Data Deficient while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Rust Colored Crab	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class	Malacostraca (Crustaceans)	Insecta (Insects)
Order	Decapoda (Decapoda)	Lepidoptera (Butterflies & Moths)
Family	Potamidae	Nymphalidae (Brush-footed Butterflies)
Genus	Geothelphusa	Aglais
Species	Geothelphusa ferruginea	Aglais urticae

Evolutionary Relationship

Rust Colored Crab and small tortoiseshell share a common ancestor at the Phylum level: Arthropoda. (Arthropods)

Conservation Status

Rust Colored Crab

DD — Data Deficient

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Rust Colored Crab	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Rust Colored Crab

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Found in Taiwan.

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.