Brook Floater vs Pill Beetle

Alasmidonta varicosa compared with Byrrhus pilula

Key Differences

• Brook Floater is Vulnerable while Pill Beetle is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Pill Beetle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Coleoptera (Beetles)
Family	Unionidae	Byrrhidae
Genus	Alasmidonta	Byrrhus
Species	Alasmidonta varicosa	Byrrhus pilula

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Pill Beetle

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Pill Beetle
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.

Pill Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Canada, 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.