Brook Floater vs Common Spreadwing

Alasmidonta varicosa compared with Lestes sponsa

Key Differences

• Brook Floater is Vulnerable while Common Spreadwing is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Common 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	Lestes
Species	Alasmidonta varicosa	Lestes sponsa

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Common Spreadwing

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Common 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.

Common Spreadwing

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, 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.

Common Spreadwing

Common Spreadwing (Lestes sponsa) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.