Brook Floater vs Dark-streaked Button

Alasmidonta varicosa compared with Acleris umbrana

Key Differences

• Brook Floater is Vulnerable while Dark-streaked Button is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Dark-streaked Button
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Tortricidae
Genus	Alasmidonta	Acleris
Species	Alasmidonta varicosa	Acleris umbrana

Evolutionary Relationship

Brook Floater and Dark-streaked Button share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Dark-streaked Button

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Dark-streaked Button
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.

Dark-streaked Button

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, 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.