The sac spiders of the family Clubionidae have a very confusing taxonomic history. Once, this family was a large catch-all taxon for a disparate collection of spiders, similar only in that they had eight eyes arranged in two rows and conical anterior spinnerets that touched, and were wandering predators that built silken retreats, or sacs, usually on plant terminals, between leaves, under bark, or under rocks. These are now recognized to include several families, some of which are more closely related to the three-clawed spiders, like lynx and wolf spiders, than to Clubionidae and related families.
Liocranidae is a family of araneomorph spiders first described by Eugène Simon in 1897. They are one of several groups called "sac spiders". The holarctic genus Agroeca is the best-known, but it also includes various genera of more obscure spiders that still lack a diagnosis. Two species in the North American genus Neoanagraphis are found in the extremely dry conditions in the Mojave, Sonoran and Chihuahuan deserts. Females live in animal burrows while males wander and are the ones most often caught in pitfall traps.
Agroeca brunnea is a species of spider in the family Liocranidae. It is found in the Palearctic realm and was first described by John Blackwall in 1833.
Liocranum is a genus of spiders in the family Liocranidae. The genus was first described by Ludwig Carl Christian Koch in 1866.
Scotina is a genus of sac spiders of the family Liocranidae which was named by the German zoologist Franz Anton Menge in 1873 with Scotina gracilipes as the type species. Scotina was thought to be a mainly Western Palearctic genus but one species, Scotina palliardi was found in Korea in 2011. The species in the genus Scotina are small spiders which have six to ten pairs of ventral spines which can be seen using a lens. They have a darker and shinier cephalothorax than in other genera within the Liocranidae. They also have light brown femora with the more distal segments of the legs are darker, especially on the first pairs. They are terrestrial spiders which are mainly found among moss and litter on the ground.
Arabelia is a genus of spiders in the family Liocranidae. It was first described in 2009 by Bosselaers. As of 2017, it contains only one species, Arabelia pheidoleicomes, found in Greece and Turkey.
Coryssiphus is a genus of spiders in the family Liocranidae. It was first described in 1903 by Simon. As of 2016, it contains 3 species, all in South Africa.
Cteniogaster is a genus of spiders in the family Liocranidae. It was first described in 2013 by Bosselaers & Jocqué. As of 2017, it contains 7 African species.
Hesperocranum is a genus of spiders in the family Liocranidae. It was first described in 1991 by Ubick & Platnick. As of 2017, it contains only one species, Hesperocranum rothi, found in the U.S.
Laudetia is a genus of spiders in the family Liocranidae. It was first described in 1941 by Gertsch. As of 2016, it contains 3 species from the Caribbean.
Liocranoeca is a genus of liocranid sac spiders that was first described by J. Wunderlich in 1999.
Liparochrysis is a genus of spiders in the family Liocranidae. It was first described in 1909 by Simon. As of 2017, it contains only one species, Liparochrysis resplendens, found in western Australia.
Mesobria is a genus of spiders in the family Liocranidae. It was first described in 1898 by Simon. As of 2017, it contains only one species, Mesobria guttata, found on St. Vincent.
Neoanagraphis is a genus of spiders in the family Liocranidae. It was first described in 1936 by Gertsch and Mulaik. As of 2016, it contains two species: N. chamberlini and N. pearcei.
Rhaeboctesis is a genus of spiders in the family Liocranidae. It was first described in 1897 by Simon. As of 2017, it contains seven species.
Sudharmia is a genus of spiders in the family Liocranidae. It was first described in 2001 by Deeleman-Reinhold. As of 2016, it contains three species, all found in Sumatra.
Toxoniella is a genus of spiders in the family Liocranidae. It was first described in 2002 by Warui & Jocqué. As of 2021, it contains five species, all from Kenya.
Vankeeria is a genus of spiders in the family Liocranidae. First described in 2012 by Bosselaers, it contains only one species As of 2017, Vankeeria catoptronifera, found in Greece.
Tamin is a genus of Indonesian long-legged sac spiders first described by Christa Deeleman-Reinhold in 2001. As of April 2019 it contains only two species.
Sestakovaia is a small genus of liocranid sac spiders first described by Alireza Zamani and Yuri M. Marusik in 2021. As of December 2021 it contains only two species: S. annulipes and S. hyrcania. This genus is named after the Slovakian arachnologist Anna Šestáková.
