Ariadna similis
Ariadna similis is a species of spider in the family Segestriidae. It is endemic to the North West province of South Africa and is commonly known as the Mafikeng tube-web spider.
Distribution
Ariadna similis is known only from the type locality Mafikeng in the North West province, at an altitude of 1,289 m above sea level.Habitat and ecology
The species inhabits the Savanna biome and constructs tube signal-webs made in crevices of walls, rocks, fallen tree trunks, or bark of trees.Description
The species resembles A. bilineata but is larger and darker in colour. Females have a reddish-yellow to dark reddish-brown carapace, darker anteriorly, with a hairy surface usually finely veined with black. Chelicerae are yellowish-red to black.The abdomen has a fine, pale 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 is 11.5 mm.