Brook Floater vs flat millipede

Alasmidonta varicosa compared with Polydesmus angustus

Key Differences

• Brook Floater is Vulnerable while flat millipede is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	flat millipede
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Diplopoda (Diplopoda)
Order	Unionida (Unionida)	Polydesmida (Polydesmida)
Family	Unionidae	Polydesmidae
Genus	Alasmidonta	Polydesmus
Species	Alasmidonta varicosa	Polydesmus angustus

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

flat millipede

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	flat millipede
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.

flat millipede

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Portugal, 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.