Brook Floater vs Saint John'S Wort Beetle

Alasmidonta varicosa compared with Chrysolina hyperici

Key Differences

• Brook Floater is Vulnerable while Saint John'S Wort Beetle is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Saint John'S Wort Beetle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Coleoptera (Beetles)
Family	Unionidae	Chrysomelidae
Genus	Alasmidonta	Chrysolina
Species	Alasmidonta varicosa	Chrysolina hyperici

Evolutionary Relationship

Brook Floater and Saint John'S Wort Beetle share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Saint John'S Wort Beetle

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Saint John'S Wort Beetle
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.

Saint John'S Wort Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Europe (5 countries), North America (United States), and South America (Chile). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States