rough whorl snail vs toothless chrysalis snail

Columella aspera compared with Columella edentula

Key Differences

• rough whorl snail is Data Deficient while toothless chrysalis snail is Near Threatened.

Taxonomic Classification

Rank	rough whorl snail	toothless chrysalis 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	Columella	Columella
Species	Columella aspera	Columella edentula

Evolutionary Relationship

rough whorl snail and toothless chrysalis snail share a common ancestor at the Genus level: Columella.

Conservation Status

rough whorl snail

DD — Data Deficient

toothless chrysalis snail

NT — Near Threatened

Physical Characteristics

Attribute	rough whorl snail	toothless chrysalis snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

rough whorl snail

Habitat

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

Range

Found across Europe (7 countries).

toothless chrysalis snail

Habitat

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

Range

Found across Europe (7 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇫🇷 France 🇮🇹 Italy 🇳🇴 Norway 🇸🇪 Sweden