greater grass snail vs ribbed grass snail

Vallonia declivis compared with Vallonia costata

Key Differences

• greater grass snail is Near Threatened while ribbed grass snail is Least Concern.

Taxonomic Classification

Rank	greater grass snail	ribbed grass snail
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Mollusca (mollusques)	Mollusca (mollusques)
Class same	Gastropoda (Gastropoda)	Gastropoda (Gastropoda)
Order same	Stylommatophora (Stylommatophora)	Stylommatophora (Stylommatophora)
Family same	Valloniidae	Valloniidae
Genus same	Vallonia	Vallonia
Species	Vallonia declivis	Vallonia costata

Evolutionary Relationship

greater grass snail and ribbed grass snail share a common ancestor at the Genus level: Vallonia.

Conservation Status

greater grass snail

NT — Near Threatened

ribbed grass snail

LC — Least Concern

Physical Characteristics

Attribute	greater grass snail	ribbed grass snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

greater grass snail

Habitat

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

Range

Found in France. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

ribbed grass snail

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (Israel), Europe (9 countries), North America (Mexico, United States), Oceania and the Pacific (New Zealand), and South America (Chile).

Shared Countries

Both species can be found in 1 countries:

🇫🇷 France