Tyrotama arida

Last updated

Cape Arid Long Spinneret Ground Spider
Tyrotama arida - Justin Ponder - 471016312.jpeg
T. arida
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Hersiliidae
Genus: Tyrotama
Species:
T. arida
Binomial name
Tyrotama arida
(Smithers, 1945) [1]
Synonyms
  • Tama aridaSmithers, 1945
  • Tama obscuraSmithers, 1945

Tyrotama arida is a species of spider in the family Hersiliidae. [2] It is endemic to South Africa and is commonly known as the Cape Arid Long Spinneret Ground Spider. [3]

Contents

Distribution

Tyrotama arida is found in two South African provinces at altitudes ranging from 78 to 1,850 m above sea level. [3]

Habitat and ecology

The species occurs in multiple biomes including Fynbos, Desert, Grassland, Nama Karoo, and Savanna biomes. It is collected under flat stones on rocky areas and is frequently found in pitfall traps. [3]

This species constructs circular webs under flat stones, with the web attached to the stone's underside and hanging like a veil. The entrance is positioned on the northern side. Females have been observed with multiple egg sacs congregated together and covered with small stone chips. [3]

Description

Tyrotama arida is known from both sexes and serves as the type species for the genus Tyrotama. Like other members of the genus, it exhibits shorter legs compared to Hersilia species. [3]

Conservation

Tyrotama arida is listed as Least Concern by the South African National Biodiversity Institute due to its wide distribution range. The species is protected in three protected areas including the Cederberg Wilderness Area and Richtersveld Transfrontier National Park. [3]

Taxonomy

The species was originally described by Smithers in 1945 as Tama arida from Montagu in the Western Cape. Foord & Dippenaar-Schoeman (2005) transferred it to Tyrotama and synonymized Tama obscuraSmithers, 1945 with this species. [4]

References

  1. Smithers, R.H.N. (1945). "The Hersiliidae (Araneae) of South Africa". Transactions of the Royal Society of South Africa. 31: 1–18.
  2. "Tyrotama arida (Smithers, 1945)". World Spider Catalog. Retrieved 21 September 2025.
  3. 1 2 3 4 5 6 Dippenaar-Schoeman, A.S.; Haddad, C.R.; Foord, S.H.; Lotz, L.N. (2020). The Hersiliidae of South Africa. Version 1. South African National Survey of Arachnida Photo Identification Guide. p. 15. doi:10.5281/zenodo.5913607 . Retrieved 21 September 2025. Creative Commons by small.svg  This article incorporates text available under the CC BY 4.0 license.
  4. Foord, S.H.; Dippenaar-Schoeman, A.S. (2005). "A revision of the Afrotropical species of Hersiliola Thorell and Tama Simon with the description of a new genus Tyrotama (Araneae: Hersiliidae)". African Entomology. 13: 255–279.