Brook Floater vs Brown Leaf Weevil

Alasmidonta varicosa compared with Phyllobius oblongus

Key Differences

• Brook Floater is Vulnerable while Brown Leaf Weevil is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Brown Leaf Weevil
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Coleoptera (Beetles)
Family	Unionidae	Curculionidae
Genus	Alasmidonta	Phyllobius
Species	Alasmidonta varicosa	Phyllobius oblongus

Evolutionary Relationship

Brook Floater and Brown Leaf Weevil share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Brown Leaf Weevil

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Brown Leaf Weevil
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.

Brown Leaf Weevil

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and deserts and xeric shrublands within the Palearctic biogeographic realm.

Range

Widely distributed across Asia (Azerbaijan, Kazakhstan, Turkey), Europe (34 countries), and North America (Canada, United States).

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.

Brown Leaf Weevil

The Brown Leaf Weevil (Phyllobius oblongus) is a species in the genus Phyllobius. It is currently classified as Least Concern on the IUCN Red List. Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and deserts and xeric shrublands within the Palearctic biogeographic realm.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States