Aspen Pigmy vs Noctule

Stigmella assimilella compared with Nyctalus noctula

Key Differences

• Aspen Pigmy is Least Concern while Noctule is Vulnerable.

Taxonomic Classification

Rank	Aspen Pigmy	Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Lepidoptera (Butterflies & Moths)	Chiroptera (Bats)
Family	Nepticulidae	Vespertilionidae
Genus	Stigmella	Nyctalus
Species	Stigmella assimilella	Nyctalus noctula

Evolutionary Relationship

Aspen Pigmy and Noctule share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Aspen Pigmy

LC — Least Concern

Noctule

VU — Vulnerable

Physical Characteristics

Attribute	Aspen Pigmy	Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Aspen Pigmy

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Aspen Pigmy

The Aspen Pigmy (Stigmella assimilella) is a species in the genus Stigmella. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats. Distributed across Belgium, Denmark, Norway, and Sweden.

Noctule

Noctule (Nyctalus noctula) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden