Brook Floater vs Common Blue Damselfly

Alasmidonta varicosa compared with Enallagma cyathigerum

Key Differences

• Brook Floater is Vulnerable while Common Blue Damselfly is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Common Blue Damselfly
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Odonata (Odonata)
Family	Unionidae	Coenagrionidae
Genus	Alasmidonta	Enallagma
Species	Alasmidonta varicosa	Enallagma cyathigerum

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Common Blue Damselfly

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Common Blue Damselfly
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 Blue Damselfly

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 Blue Damselfly

Common Blue Damselfly (Enallagma cyathigerum) 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.