Tree Snail
Balea perversa
Conservation status data sourced from the IUCN Red List of Threatened Species.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Balea_perversa
Taxonomy & Classification
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Stylommatophora
Family
Clausiliidae
Genus
Balea
Tree Snail belongs to the family Clausiliidae, order Stylommatophora, within the Gastropoda class.
Species Profile
Species profile data sourced from the IUCN Red List of Threatened Species.
Balea perversa faces severe threats from habitat destruction and fragmentation of its specialized limestone environments. Climate change and pollution further compromise the delicate conditions required for this species' survival, while its restricted range and specific habitat requirements make it extremely vulnerable to environmental changes.
Key Facts
Habitat & Distribution
Inhabits limestone cliffs, rocky outcrops, and calcareous stone walls in temperate regions. This species requires specific moisture conditions and calcium-rich substrates found in crevices and under overhangs of limestone formations.
Threats
IUCN Red List: Critically Endangered
Balea perversa faces severe threats from habitat destruction and fragmentation of its specialized limestone environments. Climate change and pollution further compromise the delicate conditions required for this species' survival, while its restricted range and specific habitat requirements make it extremely vulnerable to environmental changes.
Climate change affecting moisture levels
Habitat destruction and fragmentation
Limestone quarrying and mining
Air pollution and acid rain
Invasive species competition
National vs Global Threat Status
How this species is assessed at the national level compared to its IUCN global status (CR).
| Country | National Status | Global Status | Comparison |
|---|---|---|---|
| EU | LCLeast Concern | CRCritically Endangered | Lower local risk |
| EU | LCLeast Concern | CRCritically Endangered | Lower local risk |
National Red List data sourced from the National Red List Project (nationalredlist.org, ZSL) and country-specific Red List authorities.
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
National Red Lists: ZSL (2025). National Red List. Zoological Society of London. Available at: https://www.nationalredlist.org
This page: SpeciesRadar (2025). Tree Snail (Balea perversa). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/tree-snail