Lesser Noctule vs Yellow-triangle slender

Nyctalus leisleri compared with Caloptilia alchimiella

Key Differences

• Lesser Noctule is Endangered while Yellow-triangle slender is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Yellow-triangle slender
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Chiroptera (Bats)	Lepidoptera (Butterflies & Moths)
Family	Vespertilionidae	Gracillariidae
Genus	Nyctalus	Caloptilia
Species	Nyctalus leisleri	Caloptilia alchimiella

Evolutionary Relationship

Lesser Noctule and Yellow-triangle slender share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Lesser Noctule

EN — Endangered

Yellow-triangle slender

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Yellow-triangle slender
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.

Yellow-triangle slender

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (7 countries).

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden 🇺🇦 Ukraine