Brook Floater vs Stripe-Legged Robberfly

Alasmidonta varicosa compared with Dioctria hyalipennis

Key Differences

• Brook Floater is Vulnerable while Stripe-Legged Robberfly is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Stripe-Legged Robberfly
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Diptera (Diptera)
Family	Unionidae	Asilidae
Genus	Alasmidonta	Dioctria
Species	Alasmidonta varicosa	Dioctria hyalipennis

Evolutionary Relationship

Brook Floater and Stripe-Legged Robberfly share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Stripe-Legged Robberfly

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Stripe-Legged Robberfly
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.

Stripe-Legged Robberfly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and 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