Brook Floater vs Marbled Orbweaver

Alasmidonta varicosa compared with Araneus marmoreus

Key Differences

• Brook Floater is Vulnerable while Marbled Orbweaver is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Marbled Orbweaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Arachnida (Arachnids)
Order	Unionida (Unionida)	Araneae (Araneae)
Family	Unionidae	Araneidae
Genus	Alasmidonta	Araneus
Species	Alasmidonta varicosa	Araneus marmoreus

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Marbled Orbweaver

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Marbled Orbweaver
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.

Marbled Orbweaver

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Found across Europe (4 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