Chacoan naked-tailed armadillo vs Cobweb weaver

Cabassous chacoensis compared with Steatoda nobilis

Key Differences

• Chacoan naked-tailed armadillo is Near Threatened while Cobweb weaver is Not Evaluated.

Taxonomic Classification

Rank	Chacoan naked-tailed armadillo	Cobweb weaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Arachnida (Arachnids)
Order	Cingulata (Cingulata)	Araneae (Araneae)
Family	Dasypodidae	Theridiidae
Genus	Cabassous	Steatoda
Species	Cabassous chacoensis	Steatoda nobilis

Evolutionary Relationship

Chacoan naked-tailed armadillo and Cobweb weaver share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Chacoan naked-tailed armadillo

NT — Near Threatened

Cobweb weaver

NE — Not Evaluated

Physical Characteristics

Attribute	Chacoan naked-tailed armadillo	Cobweb weaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chacoan naked-tailed armadillo

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Cobweb weaver

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Ecuador).

Chacoan naked-tailed armadillo

The Chacoan Naked-Tailed Armadillo (Cabassous chacoensis) is a species in the genus Cabassous. It is currently classified as Near Threatened on the IUCN Red List.

Cobweb weaver

The noble false widow (Steatoda nobilis) is a theridiid spider that has attracted considerable media attention in the British Isles and along the Atlantic coast of Europe due to its painful but rarely dangerous bite and its rapid range expansion facilitated by human activity. Originally native to the Canary Islands and Madeira, the species arrived in southern England during the 19th century, likely via banana shipments, and has since spread northward through Britain and westward into Ireland, while also establishing populations along the Iberian Peninsula and Atlantic France. Females are robust, with a dark brown carapace and a distinctive cream-colored pattern on the bulbous abdomen that varies between individuals; females reach 8.5–14 millimeters in body length, making this one of the larger European theridiids. The species constructs persistent, tangled cobwebs in sheltered locations outside buildings—under window ledges, in door frames, and in garden walls—as well as within homes in cooler seasons. It is a generalist predator, capturing insects and other invertebrates, and has been reported to occasionally subdue prey considerably larger than itself, including small lizards. Steatoda nobilis venom produces steatodism, which can cause localized pain, swelling, and in rare cases systemic symptoms. Its conservation status has not been formally assessed, but its expanding range demonstrates considerable resilience.