Elm Leech vs Japanese Weasel

Hypsizygus ulmarius compared with Mustela itatsi

Key Differences

• Elm Leech is Critically Endangered while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Elm Leech	Japanese Weasel
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (Mammals)
Order	Agaricales (Gilled Mushrooms)	Carnivora (Carnivorans)
Family	Lyophyllaceae	Mustelidae (Weasels & Otters)
Genus	Hypsizygus	Mustela
Species	Hypsizygus ulmarius	Mustela itatsi

Conservation Status

Elm Leech

CR — Critically Endangered

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Elm Leech	Japanese Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Elm Leech

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Indomalayan biogeographic realm.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (United States). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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.