Fen Dwarf vs Niceforo Maria’s Oldfield Mouse

Elachista pomerana compared with Thomasomys nicefori

Key Differences

• Fen Dwarf is Endangered while Niceforo Maria’s Oldfield Mouse is Least Concern.

Taxonomic Classification

Rank	Fen Dwarf	Niceforo Maria’s Oldfield Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Lepidoptera (Butterflies & Moths)	Rodentia (Rodents)
Family	Elachistidae	Cricetidae
Genus	Elachista	Thomasomys
Species	Elachista pomerana	Thomasomys nicefori

Evolutionary Relationship

Fen Dwarf and Niceforo Maria’s Oldfield Mouse share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Fen Dwarf

EN — Endangered

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Physical Characteristics

Attribute	Fen Dwarf	Niceforo Maria’s Oldfield Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Fen Dwarf

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Niceforo Maria’s Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.