Sason robustum

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

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

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]