Black-Lined Periwinkle vs Harmless Serotine

Littorina saxatilis compared with Eptesicus innoxius

Key Differences

• Black-Lined Periwinkle is Least Concern while Harmless Serotine is Near Threatened.

Taxonomic Classification

Rank	Black-Lined Periwinkle	Harmless Serotine
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Littorinimorpha (Littorinimorpha)	Chiroptera (Bats)
Family	Littorinidae	Vespertilionidae
Genus	Littorina	Eptesicus
Species	Littorina saxatilis	Eptesicus innoxius

Evolutionary Relationship

Black-Lined Periwinkle and Harmless Serotine share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Black-Lined Periwinkle

LC — Least Concern

Harmless Serotine

NT — Near Threatened

Physical Characteristics

Attribute	Black-Lined Periwinkle	Harmless Serotine
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).

Harmless Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.