Brook Floater vs Grizzled Skipper

Alasmidonta varicosa compared with Pyrgus centaureae

Key Differences

• Brook Floater is Vulnerable while Grizzled Skipper is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Grizzled 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	Pyrgus
Species	Alasmidonta varicosa	Pyrgus centaureae

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Grizzled Skipper

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Grizzled 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.

Grizzled Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Finland, Norway, Russia, 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.