Eurasian beaver vs Lesser Bulb Fly

Castor fiber compared with Eumerus narcissi

Key Differences

• Eurasian beaver is Vulnerable while Lesser Bulb Fly is Data Deficient.

Taxonomic Classification

Rank	Eurasian beaver	Lesser Bulb Fly
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Rodentia (Rodents)	Diptera (Diptera)
Family	Castoridae (Beavers)	Syrphidae
Genus	Castor (Beavers)	Eumerus
Species	Castor fiber	Eumerus narcissi

Evolutionary Relationship

Eurasian beaver and Lesser Bulb Fly share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Lesser Bulb Fly

DD — Data Deficient

Physical Characteristics

Attribute	Eurasian beaver	Lesser Bulb Fly
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Lesser Bulb Fly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found in United States.

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.