Geyer’s Whorl Snail vs Round-mouthed Whorl Snail

Vertigo geyeri compared with Vertigo genesii

Key Differences

• Geyer’s Whorl Snail is Vulnerable while Round-mouthed Whorl Snail is Near Threatened.

Taxonomic Classification

Rank	Geyer’s Whorl Snail	Round-mouthed Whorl Snail
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Mollusca (軟体動物)	Mollusca (軟体動物)
Class same	Gastropoda (腹足綱)	Gastropoda (腹足綱)
Order same	Stylommatophora (Stylommatophora)	Stylommatophora (Stylommatophora)
Family same	Vertiginidae	Vertiginidae
Genus same	Vertigo	Vertigo
Species	Vertigo geyeri	Vertigo genesii

Evolutionary Relationship

Geyer’s Whorl Snail and Round-mouthed Whorl Snail share a common ancestor at the Genus level: Vertigo.

Conservation Status

Geyer’s Whorl Snail

VU — Vulnerable

Round-mouthed Whorl Snail

NT — Near Threatened

Physical Characteristics

Attribute	Geyer’s Whorl Snail	Round-mouthed Whorl Snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Geyer’s Whorl Snail

Habitat

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

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Round-mouthed Whorl Snail

Habitat

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

Range

Distributed across France, Italy, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Shared Countries

Both species can be found in 4 countries:

🇫🇷 France 🇮🇹 Italy 🇳🇴 Norway 🇸🇪 Sweden