Black-Based Cluster Fly vs Brook Alder

Pollenia labialis compared with Alnus maritima

Key Differences

• Black-Based Cluster Fly is Least Concern while Brook Alder is Endangered.

Taxonomic Classification

Rank	Black-Based Cluster Fly	Brook Alder
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Diptera (Diptera)	Fagales (Beeches & Oaks)
Family	Polleniidae	Betulaceae
Genus	Pollenia	Alnus
Species	Pollenia labialis	Alnus maritima

Conservation Status

Black-Based Cluster Fly

LC — Least Concern

Brook Alder

EN — Endangered

Physical Characteristics

Attribute	Black-Based Cluster Fly	Brook Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-Based Cluster Fly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, Sweden, and United States.

Brook Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Belgium, France, Netherlands, and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Black-Based Cluster Fly

The Black-Based Cluster Fly (Pollenia labialis) is a species in the genus Pollenia. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Brook Alder

The Brook Alder (Alnus maritima) is a species in the genus Alnus. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.