Black-Lined Periwinkle vs flat periwinkle

Littorina saxatilis compared with Littorina fabalis

Taxonomic Classification

Rank	Black-Lined Periwinkle	flat periwinkle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (moluscos)	Mollusca (moluscos)
Class same	Gastropoda (gastrópodos)	Gastropoda (gastrópodos)
Order same	Littorinimorpha (Littorinimorpha)	Littorinimorpha (Littorinimorpha)
Family same	Littorinidae	Littorinidae
Genus same	Littorina	Littorina
Species	Littorina saxatilis	Littorina fabalis

Evolutionary Relationship

Black-Lined Periwinkle and flat periwinkle share a common ancestor at the Genus level: Littorina.

Conservation Status

Black-Lined Periwinkle

LC — Least Concern

flat periwinkle

LC — Least Concern

Physical Characteristics

Attribute	Black-Lined Periwinkle	flat periwinkle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-Lined Periwinkle

Habitat

Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands within the Afrotropic biogeographic realm.

Range

Widely distributed across Africa (Namibia, South Africa), Europe (5 countries), and North America (United States).

flat periwinkle

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Black-Lined Periwinkle

The Black-Lined Periwinkle (Littorina saxatilis) is a species in the genus Littorina. It is currently classified as Least Concern on the IUCN Red List. Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands within the Afrotropic biogeographic realm.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden