Merriam’s Pocket Mouse vs Nut-Tree Pigmy

Perognathus merriami compared with Stigmella microtheriella

Taxonomic Classification

Rank	Merriam’s Pocket Mouse	Nut-Tree Pigmy
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Rodentia (Rodents)	Lepidoptera (Butterflies & Moths)
Family	Heteromyidae	Nepticulidae
Genus	Perognathus	Stigmella
Species	Perognathus merriami	Stigmella microtheriella

Evolutionary Relationship

Merriam’s Pocket Mouse and Nut-Tree Pigmy share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Merriam’s Pocket Mouse

LC — Least Concern

Nut-Tree Pigmy

LC — Least Concern

Physical Characteristics

Attribute	Merriam’s Pocket Mouse	Nut-Tree Pigmy
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Merriam’s Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Nut-Tree Pigmy

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.