Brook Floater vs red underwing skipper

Alasmidonta varicosa compared with Spialia sertorius

Key Differences

• Brook Floater is Vulnerable while red underwing skipper is Extinct.

Taxonomic Classification

Rank	Brook Floater	red underwing skipper
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Hesperiidae
Genus	Alasmidonta	Spialia
Species	Alasmidonta varicosa	Spialia sertorius

Evolutionary Relationship

Brook Floater and red underwing skipper share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

red underwing skipper

EX — Extinct

Physical Characteristics

Attribute	Brook Floater	red underwing skipper
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.

red underwing skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (21 countries).

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.