Brook Floater vs Eastern Willow Spreadwing

Alasmidonta varicosa compared with Chalcolestes parvidens

Key Differences

• Brook Floater is Vulnerable while Eastern Willow Spreadwing is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Eastern Willow Spreadwing
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Odonata (Odonata)
Family	Unionidae	Lestidae
Genus	Alasmidonta	Chalcolestes
Species	Alasmidonta varicosa	Chalcolestes parvidens

Evolutionary Relationship

Brook Floater and Eastern Willow Spreadwing share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Eastern Willow Spreadwing

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Eastern Willow Spreadwing
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.

Eastern Willow Spreadwing

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

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.