Comb-footed spider vs common greasewort

Parasteatoda tabulata compared with Aneura pinguis

Key Differences

• Comb-footed spider is Not Evaluated while common greasewort is Least Concern.

Taxonomic Classification

Rank	Comb-footed spider	common greasewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Marchantiophyta (liverwort)
Class	Arachnida (Arachnids)	Jungermanniopsida (Jungermanniopsida)
Order	Araneae (Araneae)	Metzgeriales (Metzgeriales)
Family	Theridiidae	Aneuraceae
Genus	Parasteatoda	Aneura
Species	Parasteatoda tabulata	Aneura pinguis

Conservation Status

Comb-footed spider

NE — Not Evaluated

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	Comb-footed spider	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Comb-footed spider

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Distributed across Denmark, Germany, Sweden, and United States.

common greasewort

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Colombia).

Comb-footed spider

<em>Parasteatoda tabulata</em> is an arachnid in the family Theridiidae, commonly grouped with comb-footed spiders. It has been recorded from Europe and the United States, indicating a broad distribution across temperate regions of the Northern Hemisphere. Like other members of the family Theridiidae, <em>P. tabulata</em> constructs irregular, tangled cobwebs in sheltered locations such as corners of buildings, under eaves, rock crevices, and dense vegetation. The species uses its characteristically comb-like hind tarsal setae to manipulate silk and wrap prey. It is a generalist predator of small insects and other arthropods that become ensnared in its web. Members of this family are small spiders, generally spending their adult lives in close association with their webs. The species has not been formally assessed by the IUCN, and specific quantitative biological trait data are not available in the current record.

common greasewort

<em>Aneura pinguis</em>, commonly known as common greasewort, is a liverwort belonging to the genus Aneura within the family Aneuraceae. This cryptogamic plant inhabits ecosystems across Asia, Europe, and North America, thriving in moist or waterlogged environments. Its range encompasses Taiwan in Asia, six European countries, the United States in North America, and Brazil and Colombia in South America, indicating a broad geographic distribution across multiple continents. Common greasewort is assessed as Least Concern on the IUCN Red List. The species typically forms flat, ribbon-like thalli in damp habitats such as stream banks, wet rocks, and boggy ground. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇸🇪 Sweden 🇺🇸 United States