Kleiner Abendsegler vs Rusty Oak Button

Nyctalus leisleri compared with Acleris ferrugana

Key Differences

• Kleiner Abendsegler is Endangered while Rusty Oak Button is Least Concern.

Taxonomic Classification

Rank	Kleiner Abendsegler	Rusty Oak Button
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Chordata (Chordatiere)	Arthropoda (Gliederfüßer)
Class	Mammalia (Säugetiere)	Insecta (Insekten)
Order	Chiroptera (Fledertiere)	Lepidoptera (Schmetterlinge)
Family	Vespertilionidae	Tortricidae
Genus	Nyctalus	Acleris
Species	Nyctalus leisleri	Acleris ferrugana

Evolutionary Relationship

Kleiner Abendsegler and Rusty Oak Button share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Kleiner Abendsegler

EN — Endangered

Rusty Oak Button

LC — Least Concern

Physical Characteristics

Attribute	Kleiner Abendsegler	Rusty Oak Button
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Kleiner Abendsegler

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 Oak Button

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden