Black roughscale catshark vs Brown Widow

Apristurus melanoasper compared with Latrodectus geometricus

Key Differences

• Black roughscale catshark is Least Concern while Brown Widow is Not Evaluated.

Taxonomic Classification

Rank	Black roughscale catshark	Brown Widow
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Chondrichthyes (Cartilaginous Fish)	Arachnida (Arachnids)
Order	Carcharhiniformes (Ground Sharks)	Araneae (Araneae)
Family	Scyliorhinidae	Theridiidae
Genus	Apristurus	Latrodectus
Species	Apristurus melanoasper	Latrodectus geometricus

Evolutionary Relationship

Black roughscale catshark and Brown Widow share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Black roughscale catshark

LC — Least Concern

Brown Widow

NE — Not Evaluated

Physical Characteristics

Attribute	Black roughscale catshark	Brown Widow
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black roughscale catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Brown Widow

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Widely distributed across Africa (South Africa), Asia (Japan), Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Peru).

Black roughscale catshark

The Black roughscale catshark (Apristurus melanoasper) is a species in the genus Apristurus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Brown Widow

The Brown Widow (Latrodectus geometricus) is a species in the genus Latrodectus. Typically found in terrestrial habitats from forests to deserts. Its geographic range includes widely distributed across africa (south africa), asia (japan), europe (7 countries), north america (united states), and south america (colombia, ecuador, peru).