Flat Periwinkle vs Lesser Noctule

Littorina obtusata compared with Nyctalus leisleri

Key Differences

• Flat Periwinkle is Least Concern while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Flat Periwinkle	Lesser Noctule
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Chordata (脊索動物)
Class	Gastropoda (腹足綱)	Mammalia (哺乳類)
Order	Littorinimorpha (タマキビガイ下目)	Chiroptera (翼手目)
Family	Littorinidae	Vespertilionidae
Genus	Littorina	Nyctalus
Species	Littorina obtusata	Nyctalus leisleri

Evolutionary Relationship

Flat Periwinkle and Lesser Noctule share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Flat Periwinkle

LC — Least Concern

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Flat Periwinkle	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Flat Periwinkle

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden