Headfly vs Lesser Noctule

Hydrotaea irritans compared with Nyctalus leisleri

Key Differences

• Headfly is Not Evaluated while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Headfly	Lesser Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Diptera (Diptera)	Chiroptera (Bats)
Family	Muscidae	Vespertilionidae
Genus	Hydrotaea	Nyctalus
Species	Hydrotaea irritans	Nyctalus leisleri

Evolutionary Relationship

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

Conservation Status

Headfly

NE — Not Evaluated

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Headfly	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Headfly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, and Sweden.

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.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇸🇪 Sweden