Brook Floater vs Brown Diving Beetle

Alasmidonta varicosa compared with Agabus brunneus

Key Differences

• Brook Floater is Vulnerable while Brown Diving Beetle is Extinct.

Taxonomic Classification

Rank	Brook Floater	Brown Diving Beetle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Coleoptera (Beetles)
Family	Unionidae	Dytiscidae
Genus	Alasmidonta	Agabus
Species	Alasmidonta varicosa	Agabus brunneus

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Brown Diving Beetle

EX — Extinct

Physical Characteristics

Attribute	Brook Floater	Brown Diving 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.

Brown Diving Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium 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.

Brown Diving Beetle

The Brown Diving Beetle (Agabus brunneus) is a species in the genus Agabus. It is currently classified as Extinct on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.