Lesser Noctule vs thick-lipped risso snail

Nyctalus leisleri compared with Rissoa membranacea

Key Differences

• Lesser Noctule is Endangered while thick-lipped risso snail is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	thick-lipped risso snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Chiroptera (Bats)	Littorinimorpha (Littorinimorpha)
Family	Vespertilionidae	Rissoidae
Genus	Nyctalus	Rissoa
Species	Nyctalus leisleri	Rissoa membranacea

Evolutionary Relationship

Lesser Noctule and thick-lipped risso snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Lesser Noctule

EN — Endangered

thick-lipped risso snail

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	thick-lipped risso snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

thick-lipped risso snail

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇸🇪 Sweden