Common Periwinkle vs Delacour's langur

Littorina littorea compared with Trachypithecus delacouri

Key Differences

• Common Periwinkle is Least Concern while Delacour's langur is Critically Endangered.

Taxonomic Classification

Rank	Common Periwinkle	Delacour's langur
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Littorinimorpha (Littorinimorpha)	Primates (Primates)
Family	Littorinidae	Cercopithecidae (Old World Monkeys)
Genus	Littorina	Trachypithecus
Species	Littorina littorea	Trachypithecus delacouri

Evolutionary Relationship

Common Periwinkle and Delacour's langur share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Common Periwinkle

LC — Least Concern

Delacour's langur

CR — Critically Endangered

Physical Characteristics

Attribute	Common Periwinkle	Delacour's langur
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Periwinkle

Habitat

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

Range

Found across Europe (4 countries) and North America (Canada, United States).

Delacour's langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common Periwinkle

Common Periwinkle (Littorina littorea) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.