Lesser Noctule vs Oak Mildew

Nyctalus leisleri compared with Erysiphe alphitoides

Key Differences

• Lesser Noctule is Endangered while Oak Mildew is Not Evaluated.

Taxonomic Classification

Rank	Lesser Noctule	Oak Mildew
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Ascomycota (Sac Fungi)
Class	Mammalia (Mammals)	Leotiomycetes (Leotiomycetes)
Order	Chiroptera (Bats)	Helotiales (Helotiales)
Family	Vespertilionidae	Erysiphaceae
Genus	Nyctalus	Erysiphe
Species	Nyctalus leisleri	Erysiphe alphitoides

Conservation Status

Lesser Noctule

EN — Endangered

Oak Mildew

NE — Not Evaluated

Physical Characteristics

Attribute	Lesser Noctule	Oak Mildew
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.

Oak Mildew

Habitat

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

Range

Found across Europe (6 countries) and North America (United States).

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden