Sason robustum

Sason robustum
Adult and its nest
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Mygalomorphae
Family:	Barychelidae
Genus:	Sason
Species:	S. robustum
Binomial name
Sason robustum (O. P-Cambridge, 1883)[1]
Synonyms[1]
Sarpedon robustum O. Pickard-Cambridge, 1883 Oecophlaeus cinctipes Pocock, 1892 Sason cinctipes Pocock, 1900 Sason armatoris Pocock, 1900

Sason robustum is a species of barychelid trapdoor spiders. It is only found in southern India, Sri Lanka and the Seychelles.

Males are about 9 mm long, females almost 11 mm.^[2]

Distinguishing features

Sason robustum is characterized by absence of teeth on the claws; cuspules present on maxillae and labium; rastellum absent; the apex of the first tibia with a single stout prolateral spine; and the palpal bulb spherical with a tapering embolus.^[3]

Taxonomy

Sason robustum was first described by Octavius Pickard-Cambridge in 1883.^[1] He placed it in a new genus Sarpedon. However this name had already been used for a beetle, so in 1887, Eugène Simon put forward the replacement genus name, Sason.^[4]

References

1. "Taxon details Sason robustum (O. Pickard-Cambridge, 1883)". World Spider Catalog. Natural History Museum Bern. Retrieved 2016-03-03.
2. Raven, R. (1986). "A revision of the spider genus Sason Simon (Sasoninae, Barychelidae, Mygalomorphae) and its historical biogeography" (PDF). The Journal of Arachnology 14: 47–70. Retrieved 2016-03-07.
3. Jose, K.S. & Sebastian, P.A. (2008). "Description of two mygalomorph spiders from south India (Araneae: Barychelidae, Theraphosidae)" (PDF). Revista Ibérica de Aracnología 15: 29–34. Retrieved 2016-03-07.
4. Simon, E. (1887). "Observation sur divers arachnides: synonymies et descriptions". Annales de la Société Entomologique de France (in French) 7: 195.