Brook Floater vs Small Sandpit Mining Bee

Alasmidonta varicosa compared with Andrena argentata

Key Differences

• Brook Floater is Vulnerable while Small Sandpit Mining Bee is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Small Sandpit Mining Bee
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	Andrenidae
Genus	Alasmidonta	Andrena
Species	Alasmidonta varicosa	Andrena argentata

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Small Sandpit Mining Bee

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Small Sandpit Mining Bee
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 Sandpit Mining Bee

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and montane grasslands and shrublands within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, Denmark, Ethiopia, 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.