bar clam vs small tortoiseshell

Spisula solida compared with Aglais urticae

Taxonomic Classification

Rank	bar clam	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Venerida (Venerida)	Lepidoptera (Butterflies & Moths)
Family	Mactridae	Nymphalidae (Brush-footed Butterflies)
Genus	Spisula	Aglais
Species	Spisula solida	Aglais urticae

Evolutionary Relationship

bar clam and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

bar clam

NT — Near Threatened

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	bar clam	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

bar clam

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

bar clam

The Bar clam (Spisula solida) is a species in the genus Spisula. It is currently classified as Near Threatened on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

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 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden