Brook Floater vs Small Black Ant

Alasmidonta varicosa compared with Lasius niger

Key Differences

• Brook Floater is Vulnerable while Small Black Ant is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Small Black Ant
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Hymenoptera (Ants, Bees & Wasps)
Family	Unionidae	Formicidae
Genus	Alasmidonta	Lasius
Species	Alasmidonta varicosa	Lasius niger

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Small Black Ant

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Small Black Ant
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 Black Ant

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Asia (Japan, Taiwan) and Europe (6 countries).

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.