Japanese Weasel vs Willow Tarspot

Mustela itatsi compared with Rhytisma salicinum

Key Differences

• Japanese Weasel is Near Threatened while Willow Tarspot is Least Concern.

Taxonomic Classification

Rank	Japanese Weasel	Willow Tarspot
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Ascomycota (Sac Fungi)
Class	Mammalia (Mammals)	Leotiomycetes (Leotiomycetes)
Order	Carnivora (Carnivorans)	Rhytismatales (Rhytismatales)
Family	Mustelidae (Weasels & Otters)	Rhytismataceae
Genus	Mustela	Rhytisma
Species	Mustela itatsi	Rhytisma salicinum

Conservation Status

Japanese Weasel

NT — Near Threatened

Willow Tarspot

LC — Least Concern

Physical Characteristics

Attribute	Japanese Weasel	Willow Tarspot
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Japanese Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Japan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Willow Tarspot

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.