Oonopidae, also known as goblin spiders, is a family of spiders consisting of over 1,600 described species in about 113 genera worldwide, with total species diversity estimated at 2000 to 2500 species. The type genus of the family is OonopsKeyserling, 1835.
The ray spiders (Theridiosomatidae) are a family of spiders first described by Eugène Simon in 1881. They are most recognizable for their construction of cone-shaped webs.
Seychellia is a genus of long-legged cave spiders that was first described by Michael I. Saaristo in 1978.
Andasta is a genus of ray spiders that was first described by Eugène Louis Simon in 1895.
Andasta siltte is a species of ray spider that is endemic to the Seychelles. It is only known from a single specimen from Silhouette Island. It is found in woodlands at the lower edge of cloud forest. It is threatened by habitat deterioration, from invasive plants and climate change.
Argyrodella is a monotypic genus of Seychelloise comb-footed spiders containing the single species, Argyrodella pusillus. It was first described by Michael I. Saaristo in 2006, and is found on the Seychelles.
Pleorotus was a monotypic genus of Seychelloise huntsman spiders containing the single species, Pleorotus braueri. It was first described by Eugène Louis Simon in 1898, and was endemic to the Seychelles. The description was based on a single male collected on Mahe Island in 1894, but none have been found in later collections, and it has been declared extinct.
Zoma is a genus of ray spiders that was first described by Michael I. Saaristo in 1996. As of June 2020 it contains three species, found in Japan, China, and on the Seychelles: Z. dibaiyin, Z. fascia, and Z. zoma.
Soeuria is a monotypic genus of Seychelloise spitting spiders containing the single species, Soeuria soeur. It was first described by Michael I. Saaristo in 1997, and is found on the Seychelles.
Theoa is a genus of sheet weavers that was first described by Michael I. Saaristo in 1995.
Nanume is a monotypic genus of comb-footed spiders containing the single species, Nanume naneum. It was first described by Michael I. Saaristo in 2006, and is found on the Aldabra Atoll.
Sesato is a monotypic genus of African comb-footed spiders containing the single species, Sesato setosa. It was first described by Michael I. Saaristo in 2006, and is found on the Seychelles.
Seycellesa is a genus of spiders in the family Theridiidae. It consists of only its type species: Seycellesa braueri, which is endangered and endemic to the Seychelles.
Spinembolia is a monotypic genus of African comb-footed spiders containing the single species, Spinembolia clabnum. It was first described by Michael I. Saaristo in 2006, and is found on the Seychelles.
Stoda is a monotypic genus of African comb-footed spiders containing the single species, Stoda libudum. It was first described by Michael I. Saaristo in 2006, and is found on the Seychelles.
Michael I. Saaristo was a Finnish arachnologist, with a particular interest in the spiders of the Seychelles. The World Spider Catalog lists 61 genus names or synonyms and 109 species names or synonyms of which he is the sole or co-author.
Euso muehlenbergi is a species of spiders in the family Ochyroceratidae. It was first described in 1998 by Michael Saaristo. As of 2021, it is the only species in the genus Euso, erected by Michael Saaristo in 2001. It is found in the Seychelles.
Roche roche is a species of spiders in the family Ochyroceratidae. It was first described in 1998 by Michael Saaristo. As of 2021, it is the only species in the genus Roche. It is found in the Seychelles.
Bardala labarda is the only species in the monotypic genus Bardala, a member of the comb-footed spider family Theridiidae. It was first described by Michael I. Saaristo in 2006, and is endemic to the coral atoll of Aldabra.
