Brook Floater vs Variable Chafer

Alasmidonta varicosa compared with Gnorimus variabilis

Key Differences

• Brook Floater is Vulnerable while Variable Chafer is Extinct.

Taxonomic Classification

Rank	Brook Floater	Variable Chafer
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Coleoptera (Beetles)
Family	Unionidae	Scarabaeidae
Genus	Alasmidonta	Gnorimus
Species	Alasmidonta varicosa	Gnorimus variabilis

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Variable Chafer

EX — Extinct

Physical Characteristics

Attribute	Brook Floater	Variable Chafer
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.

Variable Chafer

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and Switzerland.

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.