Black Sexton Beetle vs Brook Floater

Nicrophorus humator compared with Alasmidonta varicosa

Key Differences

• Black Sexton Beetle is Least Concern while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Black Sexton Beetle	Brook Floater
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Insecta (Insects)	Bivalvia (Bivalvia)
Order	Coleoptera (Beetles)	Unionida (Unionida)
Family	Staphylinidae	Unionidae
Genus	Nicrophorus	Alasmidonta
Species	Nicrophorus humator	Alasmidonta varicosa

Evolutionary Relationship

Black Sexton Beetle and Brook Floater share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Black Sexton Beetle

LC — Least Concern

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Black Sexton Beetle	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Sexton Beetle

Habitat

Inhabits deserts and xeric shrublands within the Palearctic biogeographic realm.

Range

Found across Asia (Kyrgyzstan, Tajikistan) and Europe (4 countries).

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.

Black Sexton Beetle

The Black Sexton Beetle (Nicrophorus humator) is a species in the genus Nicrophorus. It is currently classified as Least Concern on the IUCN Red List. Inhabits deserts and xeric shrublands within the Palearctic biogeographic realm.

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.