Nihoa is a genus of South Pacific brushed trapdoor spiders first described by Tracey Churchill & Robert Raven in 1992. It is named after the island Nihoa, where the type species is endemic.
Barychelidae, also known as brushed trapdoor spiders, is a spider family with about 300 species in 42 genera. Most spiders in this family build trapdoor burrows. For example, the 20 millimetres (0.79 in) long Sipalolasma builds its burrow in rotted wood, with a hinged trapdoor at each end. The 10 millimetres (0.39 in) long Idioctis builds its burrow approximately 5 centimetres (2.0 in) deep, just below the high tide level, sealing the opening with a thin trapdoor.
Sason is a genus of bark-dwelling brushed trapdoor spiders first described by Eugène Simon in 1887. It is distributed from the Seychelles through India to northern Australia. The closest related genus seems to be the monotypic Paracenobiopelma.
Paracenobiopelma is a monotypic genus of South American brushed trapdoor spiders containing the single species, Paracenobiopelma gerecormophilum. It was first described in 1952, and has only been found in Brazil. Their closest relatives are found in the genus Sason, which occur in south Asia.
Sason sundaicum is a species of barychelid trapdoor spiders that is found on trees near the sea, usually closer than 100 metres, although distances of up to five kilometres have been observed. They build short nests with two opposing trapdoors, often attached to the bark of living trees, for example Coconut Palms. However, sometimes a nest is built on sides of large boulders. Nests of males are up to two cm long, those of females up to almost three cm. The migid spider Poecilomigas abrahami from South Africa builds very similar nests.
Sason robustum is a species of barychelid trapdoor spiders. It is only found in southern India, Sri Lanka and the Seychelles.
Euphrictus squamosus is a tarantula in the Selenogyrinae subfamily. It is native to the Congo.
Annandaliella ermakulamensis is a species of tarantula in the subfamily Selenogyrinae. It is one of three species in the genus Annandaliella and the first to be described in 73 years. It is native to Ermakulam, Kerala State, India.
Sason hirsutum is a species of spiders in the family Barychelidae, found in Indonesia.
Diplothele is a genus of mygalomorph spider in the family Barychelidae, containing four species restricted to India and Sri Lanka.
Plagiobothrus is a monotypic genus of Asian brushed trapdoor spiders containing the single species, Plagiobothrus semilunaris. It was first described by Ferdinand Karsch in 1892, and has only been found in Sri Lanka, documented from the regions of Peradeniya and Kandy. It is about 24 millimetres (0.94 in) long and has a deep brown carapace and limbs. Its abdomen is black above and brown beneath.
Sipalolasma ellioti is a species of spider of the genus Sipalolasma. It is endemic to Sri Lanka. The female is 11 mm in length.
Sipalolasma is a genus of brushed trapdoor spiders first described by Eugène Simon in 1892. It is restricted to South Asia and parts of Africa.
Sipalolasma greeni is a species of spider of the genus Sipalolasma. It is endemic to Sri Lanka. The carapace and legs are deep brown in color. The abdomen is black. The known length is about 22 mm. The species was first found from Punduloya, Sri Lanka.
Aurecocrypta is a genus of Australian brushed trapdoor spiders first described by Robert Raven in 1994. As of April 2019 it contains only two species.
Natgeogia is a monotypic genus of South Pacific brushed trapdoor spiders containing the single species, Natgeogia rastellata. It was first described by Robert Raven in 1994, and has only been found on New Caledonia.
Tigidia is a genus of brushed trapdoor spiders first described by Eugène Simon in 1892.
Zophorame is a genus of Australian brushed trapdoor spiders first described by Robert Raven in 1990.
