Lesser Noctule vs Rusty Crust

Nyctalus leisleri compared with Skeletocutis amorpha

Key Differences

• Lesser Noctule is Endangered while Rusty Crust is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Rusty Crust
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Mammalia (Mammals)	Agaricomycetes (Mushrooms)
Order	Chiroptera (Bats)	Polyporales (Polyporales)
Family	Vespertilionidae	Incrustoporiaceae
Genus	Nyctalus	Skeletocutis
Species	Nyctalus leisleri	Skeletocutis amorpha

Conservation Status

Lesser Noctule

EN — Endangered

Rusty Crust

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Rusty Crust
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Rusty Crust

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden