Brook Floater vs Small Whiteface

Alasmidonta varicosa compared with Leucorrhinia dubia

Key Differences

• Brook Floater is Vulnerable while Small Whiteface is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Small Whiteface
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Odonata (Odonata)
Family	Unionidae	Libellulidae
Genus	Alasmidonta	Leucorrhinia
Species	Alasmidonta varicosa	Leucorrhinia dubia

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Small Whiteface

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Small Whiteface
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.

Small Whiteface

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Small Whiteface

Small Whiteface (Leucorrhinia dubia) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.