Chestnut Pigmy vs Eurasian beaver

Stigmella samiatella compared with Castor fiber

Key Differences

• Chestnut Pigmy is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Chestnut Pigmy	Eurasian beaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Lepidoptera (Butterflies & Moths)	Rodentia (Rodents)
Family	Nepticulidae	Castoridae (Beavers)
Genus	Stigmella	Castor (Beavers)
Species	Stigmella samiatella	Castor fiber

Evolutionary Relationship

Chestnut Pigmy and Eurasian beaver share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Chestnut Pigmy

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Chestnut Pigmy	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chestnut Pigmy

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Chestnut Pigmy

The Chestnut Pigmy (Stigmella samiatella) is a species in the genus Stigmella. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Eurasian beaver

Eurasian beaver (Castor fiber) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden