Brook Floater vs Dotted Ermel

Alasmidonta varicosa compared with Ethmia dodecea

Key Differences

• Brook Floater is Vulnerable while Dotted Ermel is Extinct.

Taxonomic Classification

Rank	Brook Floater	Dotted Ermel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Ethmiidae
Genus	Alasmidonta	Ethmia
Species	Alasmidonta varicosa	Ethmia dodecea

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Dotted Ermel

EX — Extinct

Physical Characteristics

Attribute	Brook Floater	Dotted Ermel
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.

Dotted Ermel

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, 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.