Atlantic Deep-sea Lobster vs large tortoiseshell

Acanthacaris caeca compared with Nymphalis polychloros

Key Differences

• Atlantic Deep-sea Lobster is Least Concern while large tortoiseshell is Critically Endangered.

Taxonomic Classification

Rank	Atlantic Deep-sea Lobster	large 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	Nephropidae	Nymphalidae (Brush-footed Butterflies)
Genus	Acanthacaris	Nymphalis
Species	Acanthacaris caeca	Nymphalis polychloros

Evolutionary Relationship

Atlantic Deep-sea Lobster and large tortoiseshell share a common ancestor at the Phylum level: Arthropoda. (Arthropods)

Conservation Status

Atlantic Deep-sea Lobster

LC — Least Concern

large tortoiseshell

CR — Critically Endangered

Physical Characteristics

Attribute	Atlantic Deep-sea Lobster	large tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Deep-sea Lobster

Habitat

Typically found in marine, freshwater, and terrestrial environments.

large tortoiseshell

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 9 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (39 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Atlantic Deep-sea Lobster

The Atlantic Deep-sea Lobster (Acanthacaris caeca) is a species in the genus Acanthacaris. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine, freshwater, and terrestrial environments.

large tortoiseshell

large tortoiseshell (Nymphalis polychloros) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.