Black-Lined Periwinkle vs Castor

Littorina saxatilis compared with Ricinus communis

Key Differences

• Black-Lined Periwinkle is Least Concern while Castor is Not Evaluated.

Taxonomic Classification

Rank	Black-Lined Periwinkle	Castor
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Magnoliophyta (Flowering Plants)
Class	Gastropoda (Gastropoda)	Magnoliopsida (Dicots)
Order	Littorinimorpha (Littorinimorpha)	Malpighiales (Malpighiales)
Family	Littorinidae	Euphorbiaceae
Genus	Littorina	Ricinus
Species	Littorina saxatilis	Ricinus communis

Conservation Status

Black-Lined Periwinkle

LC — Least Concern

Castor

NE — Not Evaluated

Physical Characteristics

Attribute	Black-Lined Periwinkle	Castor
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).

Castor

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 7 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (33 countries), Asia (26 countries), Europe (23 countries), North America (15 countries), Oceania and the Pacific (14 countries), and South America (12 countries).

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.

Castor

The Castor (Ricinus communis) is a species in the genus Ricinus. Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 7 distinct biome types. Populations are also found in montane and hi

Shared Countries

Both species can be found in 8 countries:

🇩🇰 Denmark 🇮🇹 Italy 🇳🇦 Namibia 🇳🇴 Norway 🇵🇹 Portugal 🇿🇦 South Africa 🇸🇪 Sweden 🇺🇸 United States