Brook Floater vs Swallow Nycteoline

Alasmidonta varicosa compared with Nycteola degenerana

Key Differences

• Brook Floater is Vulnerable while Swallow Nycteoline is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Swallow Nycteoline
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Nolidae
Genus	Alasmidonta	Nycteola
Species	Alasmidonta varicosa	Nycteola degenerana

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Swallow Nycteoline

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Swallow Nycteoline
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Swallow Nycteoline

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, and Sweden.

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.