Greater Eastern Peaclam vs small tortoiseshell

Pisidium dubium compared with Aglais urticae

Key Differences

• Greater Eastern Peaclam is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Greater Eastern Peaclam	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Sphaeriida (Sphaeriida)	Lepidoptera (Butterflies & Moths)
Family	Sphaeriidae	Nymphalidae (Brush-footed Butterflies)
Genus	Pisidium	Aglais
Species	Pisidium dubium	Aglais urticae

Evolutionary Relationship

Greater Eastern Peaclam and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Greater Eastern Peaclam

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Greater Eastern Peaclam	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Greater Eastern Peaclam

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States.

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.