bulging whorl snail vs cylindrical whorl snail

Truncatellina costulata compared with Truncatellina cylindrica

Key Differences

• bulging whorl snail is Least Concern while cylindrical whorl snail is Vulnerable.

Taxonomic Classification

Rank	bulging whorl snail	cylindrical whorl snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Moluscos)	Mollusca (Moluscos)
Class same	Gastropoda (Gastrópodes)	Gastropoda (Gastrópodes)
Order same	Stylommatophora (Stylommatophora)	Stylommatophora (Stylommatophora)
Family same	Truncatellinidae	Truncatellinidae
Genus same	Truncatellina	Truncatellina
Species	Truncatellina costulata	Truncatellina cylindrica

Evolutionary Relationship

bulging whorl snail and cylindrical whorl snail share a common ancestor at the Genus level: Truncatellina.

Conservation Status

bulging whorl snail

LC — Least Concern

cylindrical whorl snail

VU — Vulnerable

Physical Characteristics

Attribute	bulging whorl snail	cylindrical whorl snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

bulging whorl snail

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden.

cylindrical whorl snail

Habitat

Inhabits Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (8 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

bulging whorl snail

The bulging whorl snail (Truncatellina costulata) is a species in the genus Truncatellina. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden