vs Handley s Slender Opossum

Cortinarius bivelus compared with Marmosops handleyi

Key Differences

• is Data Deficient while Handley s Slender Opossum is Critically Endangered.

Taxonomic Classification

Rank		Handley s Slender Opossum
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (Mammals)
Order	Agaricales (Gilled Mushrooms)	Didelphimorphia (Didelphimorphia)
Family	Cortinariaceae	Didelphidae
Genus	Cortinarius	Marmosops
Species	Cortinarius bivelus	Marmosops handleyi

Conservation Status

DD — Data Deficient

Handley s Slender Opossum

CR — Critically Endangered

Physical Characteristics

Attribute		Handley s Slender Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Handley s Slender Opossum

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and montane grasslands and shrublands, among 4 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Colombia. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Cortinarius bivelus is a mycorrhizal agaric fungus in the family Cortinariaceae, assessed as Data Deficient (DD). Like other members of the genus, it forms ectomycorrhizal associations with forest trees and produces a characteristic cobweb-like cortina veil when young. Insufficient data on its distribution and population size prevent a reliable conservation assessment.