Japanese Weasel vs

Mustela itatsi compared with Pyrenula nitida

Key Differences

• Japanese Weasel is Near Threatened while is Endangered.

Taxonomic Classification

Rank	Japanese Weasel
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Ascomycota (Sac Fungi)
Class	Mammalia (Mammals)	Eurotiomycetes (Eurotiomycetes)
Order	Carnivora (Carnivorans)	Pyrenulales (Pyrenulales)
Family	Mustelidae (Weasels & Otters)	Pyrenulaceae
Genus	Mustela	Pyrenula
Species	Mustela itatsi	Pyrenula nitida

Conservation Status

Japanese Weasel

NT — Near Threatened

EN — Endangered

Physical Characteristics

Attribute	Japanese Weasel
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.

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

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

Pyrenula nitida is a corticolous crustose lichen producing a smooth, glossy olive-green to brown thallus with embedded, flask-shaped perithecia on smooth bark of ancient broadleaf trees in humid Atlantic woodland. It is considered a flagship indicator species for long-continuity, old-growth woodland in western Europe. Endangered, this lichen is severely threatened by the loss of veteran trees and ancient woodland habitats.