Brook Floater vs Dils’ Grayling

Alasmidonta varicosa compared with Pseudochazara orestes

Taxonomic Classification

Rank	Brook Floater	Dils’ Grayling
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Nymphalidae (Brush-footed Butterflies)
Genus	Alasmidonta	Pseudochazara
Species	Alasmidonta varicosa	Pseudochazara orestes

Evolutionary Relationship

Brook Floater and Dils’ Grayling share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Dils’ Grayling

VU — Vulnerable

Physical Characteristics

Attribute	Brook Floater	Dils’ Grayling
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.

Dils’ Grayling

Habitat

Inhabits Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Bulgaria and Greece. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.