Tord Tamerlan Teodor Thorell was a Swedish arachnologist.
Xysticus is a genus of ground crab spiders described by C. L. Koch in 1835, belonging to the order Araneae, family Thomisidae. The genus name is derived from the Ancient Greek root xyst, meaning "scraped, scraper".
Ozyptila is a genus of crab spiders that was first described by Eugène Louis Simon in 1864. It has been misspelled as "Oxyptila" in multiple accounts.
Euathlus is a genus of South American tarantulas that was first described by Anton Ausserer in 1875. These spiders are medium sized and are usually found in high elevations in the Andes. It is a senior synonym of Paraphysa, and was formerly considered a senior synonym of Brachypelma, but this was later rejected.
Cyclosternum is a genus of tarantulas that was first described by Anton Ausserer in 1871.
Ischnocolus jickelii is a small, old-world tarantula. It is found in Aden, Djibouti, Ethiopia, the United Arab Emirates and Somalia. It was first described by Ludwig Koch in 1875. In 1890, French arachnologist Eugène Simon described Chaetopelma adenense. In 2008, José Guadanucci and Richard C. Gallon decided that these were the same species, making Simon's Chaetopelma adenense a synonym.
The Ischnocolinae are a problematic subfamily of tarantulas. In 1892, Eugène Simon based the group, which he noted was only weakly homogeneous, on the presence of divided tarsal scopulae. This feature was later considered to be plesiomorphic, and both morphological and molecular phylogenetic studies have shown that, as traditionally circumscribed, the subfamily is not monophyletic. A much more narrowly defined Ischnocolinae sensu stricto was proposed in 2014. One of the authors of that proposal subsequently said that no further taxonomic changes should be considered until there had been a more comprehensive sampling of the subfamily. As of January 2021, the status of the Ischnocolinae remains unresolved.
Lasiodora is a genus of tarantulas that was first described by Ludwig Carl Christian Koch in 1850. They are often very large; body lengths of up to 25 centimetres (9.8 in), including the legs, are not unusual. They are found in South America, including the countries of Brazil, Bolivia, Costa Rica, Argentina and Uruguay.
Chaetopelma is a genus of tarantulas that was first described by Anton Ausserer in 1871. They are found in Africa and Asia including the countries of Turkey, Syria, Egypt, Cyprus, Greece, Sudan, Cameroon, and now even Iran.
Cyrtopholis is a genus of tarantulas that was first described by Eugène Louis Simon in 1892.
