Hexophthalma albospinosa

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Namibian Six-eyed Sand Spider
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Sicariidae
Genus: Hexophthalma
Species:
H. albospinosa
Binomial name
Hexophthalma albospinosa
(Purcell, 1908) [1]
Synonyms
  • Sicarius albospinosusPurcell, 1908

Hexophthalma albospinosa is a species of spider in the family Sicariidae. [2] It is endemic to southern Africa and is commonly known as the Namibian six-eyed sand spider. [3]

Contents

Distribution

Hexophthalma albospinosa occurs in Namibia and South Africa. In South Africa, it is recorded only from the Northern Cape province at Bloeddrift, west of Arnisfont in the Richtersveld at 357 m above sea level. [3]

Habitat and ecology

The species inhabits the Desert biome where it is found beneath stones in sandy areas, buried in sand. It is a free-living ground dweller that has the ability to stay beneath the soil surface for long periods. [3]

Description

The body size ranges from 8-11 mm for both males and females. The color of body and legs varies between light brown, reddish brown, dark brown or grey. The carapace is about as wide as long, with one or multiple rows of macro-setae on lateral borders. The dorsal macro-setae are arranged in a central group surrounded by 4-5 pairs of macro-setae lines. Six eyes are arranged in three diads with anterior median eyes absent. The labium is longer than wide, tapering distally and partially fused to the sternum. The chelicerae are fused at the base. [3]

The abdomen is rounded, slightly truncate posteriorly, with 3-6 paired transversal rows of macro-setae. Leg femora are covered on the dorsal surface by macro-setae, the tibia has eight rows of pointed macro-setae, and the tarsus lacks an onychium. [3]

Conservation

Hexophthalma albospinosa is listed as Least Concern by the South African National Biodiversity Institute due to its wide geographical range in southern Africa, despite its limited range within South Africa. [3]

Etymology

The specific name albospinosa is Latin, meaning "with white spines".

Taxonomy

The species was originally described by W.F. Purcell in 1908 as Sicarius albospinosus from Namibia. It was later transferred to the genus Hexophthalma by Magalhães et al. in 2017. [4] The species has been revised by Lotz (2012, 2018) and is known from both sexes. [3]

References

  1. Purcell, W.F. (1908). "Araneae (I)". Denkschriften der Medizinisch-Naturwissenschaftlichen Gesellschaft zu Jena. 13: 203–246. doi:10.5962/bhl.part.25299.
  2. "Hexophthalma albospinosa (Purcell, 1908)". World Spider Catalog. Retrieved 2025-09-27.
  3. 1 2 3 4 5 6 7 Dippenaar-Schoeman, A.S.; Haddad, C.R.; Foord, S.H.; Lotz, L.N. (2021). The Sicariidae of South Africa. Version 1. South African National Survey of Arachnida Photo Identification Guide. p. 6. doi:10.5281/zenodo.7162164. Creative Commons by small.svg  This article incorporates text available under the CC BY 4.0 license.
  4. Magalhães, I.L.F.; Brescovit, A.D.; Santos, A.J. (2017). "Phylogeny of Sicariidae spiders (Araneae: Haplogynae), with a monograph on Neotropical Sicarius". Zoological Journal of the Linnean Society. 179 (4): 767–864. doi:10.1111/zoj.12442.