Arrow-head tree snail vs Chopard's Mountain Bush-cricket

Partula sagitta compared with Antaxius chopardi

Key Differences

• Arrow-head tree snail is Extinct while Chopard's Mountain Bush-cricket is Least Concern.

Taxonomic Classification

Rank	Arrow-head tree snail	Chopard's Mountain Bush-cricket
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Gastropoda (Gastropoda)	Insecta (Insects)
Order	Stylommatophora (Stylommatophora)	Orthoptera (Orthoptera)
Family	Partulidae	Tettigoniidae
Genus	Partula	Antaxius
Species	Partula sagitta	Antaxius chopardi

Evolutionary Relationship

Arrow-head tree snail and Chopard's Mountain Bush-cricket share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Arrow-head tree snail

EX — Extinct

Chopard's Mountain Bush-cricket

LC — Least Concern

Physical Characteristics

Attribute	Arrow-head tree snail	Chopard's Mountain Bush-cricket
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arrow-head tree snail

Habitat

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

Chopard's Mountain Bush-cricket

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Arrow-head tree snail

The Arrow-head tree snail, Partula sagitta, is a species. It is currently assessed as extinct on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Chopard's Mountain Bush-cricket

Chopard's Mountain Bush-Cricket (Antaxius chopardi) is a bush-cricket (katydid) in the family Tettigoniidae, endemic to mountain ranges in the western Mediterranean region, likely including the Pyrenees and associated mountain systems of southern France and northern Spain. Bush-crickets of the genus Antaxius are large, robust tettigoniids characterised by females bearing a pronounced ovipositor for egg insertion into soil or plant tissue, and males producing species-specific stridulatory songs by rubbing modified wing structures. Despite the name mountain bush-cricket, members of this genus inhabit a range of grass-shrub-dominated montane habitats including rocky slopes, mountain meadows, and scrubland edges. They are primarily herbivorous, feeding on grasses, herbs, and low shrubs, though they may supplement their diet with small invertebrates. Stridulation songs are important for species identification in this cryptically coloured group, as multiple Antaxius species may co-occur in the same mountain range. The IUCN classifies this species as Least Concern, with populations found across suitable montane habitats within its range. The species is named after Lucien Chopard, recognising his extensive contributions to the study of European orthopteran (crickets and grasshoppers) biodiversity. Climate change-driven shifts in vegetation zones may pose future threats to montane endemic invertebrates.