Brook Floater vs Common Baskettail

Alasmidonta varicosa compared with Epitheca cynosura

Key Differences

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

Taxonomic Classification

Rank	Brook Floater	Common Baskettail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Odonata (Odonata)
Family	Unionidae	Corduliidae
Genus	Alasmidonta	Epitheca
Species	Alasmidonta varicosa	Epitheca cynosura

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Common Baskettail

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Common Baskettail
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 Baskettail

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found in United States.

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 Baskettail

The common baskettail (<em>Epitheca cynosura</em>) is a dragonfly found across terrestrial and freshwater habitats of the United States. It is classified as Least Concern on the IUCN Red List, reflecting a stable and widespread population within its native range. <em>Epitheca cynosura</em> belongs to the family Corduliidae and is typically associated with ponds, lakes, marshes, and slow-moving streams, where its aquatic larvae develop. Adults are often observed patrolling over open water and forest edges in search of prey and mates. The species is named for the basket-like egg mass that females carry at the tip of their abdomen before depositing eggs in water. Males often form feeding swarms, particularly in the morning hours, where they capture small flying insects. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States