August Cosmet vs Brook Floater

Sorhagenia rhamniella compared with Alasmidonta varicosa

Key Differences

• August Cosmet is Least Concern while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	August Cosmet	Brook Floater
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Insecta (Insects)	Bivalvia (Bivalvia)
Order	Lepidoptera (Butterflies & Moths)	Unionida (Unionida)
Family	Cosmopterigidae	Unionidae
Genus	Sorhagenia	Alasmidonta
Species	Sorhagenia rhamniella	Alasmidonta varicosa

Evolutionary Relationship

August Cosmet and Brook Floater share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

August Cosmet

LC — Least Concern

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	August Cosmet	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

August Cosmet

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

August Cosmet

The August Cosmet (Sorhagenia rhamniella) is a species in the genus Sorhagenia. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.