Brook Floater vs Larch sawfly

Alasmidonta varicosa compared with Pristiphora erichsonii

Key Differences

• Brook Floater is Vulnerable while Larch sawfly is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	Larch sawfly
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Hymenoptera (Ants, Bees & Wasps)
Family	Unionidae	Tenthredinidae
Genus	Alasmidonta	Pristiphora
Species	Alasmidonta varicosa	Pristiphora erichsonii

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Larch sawfly

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	Larch sawfly
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.

Larch sawfly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Asia (Japan), Europe (11 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.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States