Linyphiidae, spiders commonly known as sheet weavers, or money spiders is a family of very small spiders comprising 4706 described species in 620 genera worldwide. This makes Linyphiidae the second largest family of spiders after the Salticidae. The family is poorly understood due to their small body size and wide distribution; new genera and species are still being discovered throughout the world. The newest such genus is Himalafurca from Nepal, formally described in April 2021 by Tanasevitch. Since it is so difficult to identify such tiny spiders, there are regular changes in taxonomy as species are combined or divided.
Walckenaeria is a genus of dwarf spiders that was first described by John Blackwall in 1833. It is a senior synonym of Paragonatium, as well as Wideria, Cornicularia, Prosopotheca, Tigellinus, and Trachynella.
Acartauchenius is a genus of dwarf spiders that was first described by Eugène Louis Simon in 1884.
Sauron is a genus of sheet weavers that was first described by K. Y. Eskov & Y. M. Marusik in 1995. They reach a body length of 1.25 to 2 millimetres. The genus name is derived from Sauron, a character in the books of J. R. R. Tolkien.
Dippenaaria is a genus of African araneomorph spiders in the family Anapidae, containing the single species, Dippenaaria luxurians. It was first described by J. Wunderlich in 1995, and has only been found in South Africa. The genus was named in honour of South African arachnologist Ansie Dippenaar-Schoeman.
Malenella is a genus of South American tangled nest spiders containing the single species, Malenella nana. It was first described by M. J. Ramírez in 1995, and has only been found in Chile. This genus was named in honour of María Elena Galiano.
Anagraphis is a genus of ground spiders that was first described by Eugène Simon in 1893. Originally placed in the now unrecognized family Prodidomidae, it was moved to the family Gnaphosidae in 2006.
Asemostera is a genus of dwarf spiders that was first described by Eugène Louis Simon in 1898. Originally placed with the family Agelenidae, it was moved to the family Linyphiidae in 1965.
Gonatium is a genus of dwarf spiders that was first described by Anton Menge in 1868.
Moebelia is a genus of dwarf spiders that was first described by Friedrich Dahl in 1886.
Pseudotyphistes is a genus of South American sheet weavers that was first described by Paolo Marcello Brignoli in 1972.
Stemonyphantes is a genus of sheet weavers that was first described by Anton Menge in 1866.
Ansiea is a genus of crab spiders that was first described by Pekka T. Lehtinen in 2004. This genus was named in honour of South African arachnologist Ansie Dippenaar-Schoeman. As of June 2020 it contains two species found in Africa and Saudi Arabia: A. buettikeri and A. tuckeri.
Hermosa is a genus of jumping spiders first described by G. W. Peckham and E. G. Peckham in 1892, and synonymized with Myrmarachne in 1901. In 2016, Jerzy Prószyński split up Myrmarachne, creating nine new genera, all with names beginning "Myrm". However, it turned out that Myrmavola volatilis, the type species of Myrmavola, was also the type species of Hermosa, and Myrmavola was made a junior synonym. It is part of the Myrmarachnini tribe within the Salticoida clade of Salticinae.
Christa Laetitia Deeleman-Reinhold is a Dutch arachnologist. She specializes in spiders from Southeast Asia and Southern Europe, particularly cave-dwelling and tropical spiders. She donated a collection of about 25,000 Southeast Asian spiders, the largest collection of Southeast Asian spiders in existence, to the Naturalis Biodiversity Center in Leiden. In addition to numerous articles, she has written the book Forest Spiders of South East Asia (2001).
Steatoda paykulliana is a species of false black widow spider in the tangle-web spiders family, native to the Mediterranean countries, Southern Europe and Western Asia. The species is named in honor of the Swedish naturalist Gustaf von Paykull (1757–1826).
Wilhelmus Egbertus Antonius Janssen, better known as Father Chrysanthus OFMCap, was a Dutch priest and biology teacher. He was known for his studies in arachnology. Initially he was concerned with the spiders of the Netherlands but he became a specialist on New Guinea spiders. Two spider species were named in his honor following his death.
Thunberga is a genus of east African huntsman spiders. The genus was first described by Peter Jäger in 2020, and it has only been found on Madagascar and on Mayotte. It is named after the environmental activist Greta Thunberg.
Spinosatibiapalpus is a genus of tarantulas erected by Gabriel and Sherwood in 2020 for a newly discovered species and two other previously described species bearing a unique palpal bulb morphology. The name is a reference to the spines found on the fourth section of the pedipalp in adult males. This distinctive feature was also found in Pseudhapalopus species, but because it is never mentioned in the original description of that genus, Gabriel and Sherwood called into question the validity of Pseudohapalopus, and moved all its species except P. aculeatus, known only from a single male found in Bolivia in 1907. It is impossible to place P. aculeatus because the holotype was destroyed when the museum housing it was bombed during World War II, and it has been declared as nomen dubium.
Spiracme is a genus of crab spiders erected by Anton Menge in 1876 to contain S. striata, transferred from Xysticus. The exact relationship of these spiders and their closest relatives has been long debated, and many included species have been transferred to and from similar genera, namely Xysticus and Ozyptila. Most recently, Rainer Breitling conducted a DNA barcoding study in 2019 and grouped similar species based on the results:
