Pacific Spiny-rat vs Willow Pigmy

Proechimys decumanus compared with Stigmella obliquella

Key Differences

• Pacific Spiny-rat is Near Threatened while Willow Pigmy is Least Concern.

Taxonomic Classification

Rank	Pacific Spiny-rat	Willow Pigmy
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Rodentia (Rodents)	Lepidoptera (Butterflies & Moths)
Family	Echimyidae	Nepticulidae
Genus	Proechimys	Stigmella
Species	Proechimys decumanus	Stigmella obliquella

Evolutionary Relationship

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

Conservation Status

Pacific Spiny-rat

NT — Near Threatened

Willow Pigmy

LC — Least Concern

Physical Characteristics

Attribute	Pacific Spiny-rat	Willow Pigmy
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Willow Pigmy

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.