Dusky arion vs Pacific Spiny-rat

Arion subfuscus compared with Proechimys decumanus

Key Differences

• Dusky arion is Data Deficient while Pacific Spiny-rat is Near Threatened.

Taxonomic Classification

Rank	Dusky arion	Pacific Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Stylommatophora (Stylommatophora)	Rodentia (Rodents)
Family	Arionidae	Echimyidae
Genus	Arion	Proechimys
Species	Arion subfuscus	Proechimys decumanus

Evolutionary Relationship

Dusky arion and Pacific Spiny-rat share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Dusky arion

DD — Data Deficient

Pacific Spiny-rat

NT — Near Threatened

Physical Characteristics

Attribute	Dusky arion	Pacific Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dusky arion

Habitat

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

Range

Found across Europe (5 countries) and North America (United States).

Pacific Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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