Ariadna bilineata
From Wikipedia, the free encyclopedia
| Side-striped Tube-Web Spider | |
|---|---|
 | |
| Female | |
 | |
| Juvenile female | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Segestriidae |
| Genus: | Ariadna |
| Species: | A. bilineata |
| Binomial name | |
| Ariadna bilineata | |
Ariadna bilineata is a species of spider in the family Segestriidae.[2] It is endemic to South Africa and is commonly known as the Signal Hill tube-web spider or side-striped tube-web spider.[3]
Ariadna bilineata has a wide distribution across four South African provinces, Gauteng, Limpopo, North West, and Western Cape. The species occurs at altitudes ranging from 5 to 1,397 m above sea level.[3] Notable locations include Table Mountain National Park, Blouberg Nature Reserve, and Faerie Glen Nature Reserve.[3]
Habitat and ecology
The species inhabits multiple biomes including Fynbos and Savanna biomes. Like other members of its genus, it constructs tube signal-webs made in crevices of walls, rocks, fallen tree trunks, or bark of trees. The spider is nocturnal and can be observed at the entrance of its tube during the night with the tips of six legs visible on the rim of the tube.[3]
Description
female
juvenile female
Females have a reddish-yellow to dark reddish-brown carapace, darker anteriorly, with a hairy surface usually finely veined with black. The chelicerae are yellowish-red to black. The abdomen has a fine, pale yellow line running from end to end down the middle. Legs are faintly or strongly infuscated, with the anterior pairs darker than the posterior ones. Total length ranges from 6-7.5 mm. Males remain undescribed.[3]
