Tord Tamerlan Teodor Thorell (May 3, 1830 - December 22, 1901) was a Swedisharachnologist. May 3 is the 123rd day of the year in the Gregorian calendar (124th in leap years). ... 1830 was a common year starting on Friday (see link for calendar). ... December 22 is the 356th day of the year (357th in leap years) in the Gregorian Calendar. ... 1901 was a common year starting on Tuesday (see link for calendar). ... Arachnology is the scientific study of spiders and related organisms such as scorpions, pseudoscorpions, harvestmen, altogether called arachnids. ...
Thorell studied spiders with Giacomo Doria at the Museo Civico di Storia Naturale de Genoa. He corresponded with other arachnologists, such as Octavius Pickard-Cambridge, Eugène Simon and Thomas Workman. Giacomo Doria (November 1, 1840 - September 19, 1913) was an Italian naturalist. ... Location within Italy Flag of Genoa Christopher Columbus monument in Piazza Aquaverde Genoa (Italian Genova, Genoese Zena, French Gênes) is a city and a seaport in northern Italy, the capital of the Province of Genoa and of the region of Liguria. ... Frederick Octavius Pickard-Cambridge ( November 3, 1828 - March 9, 1917) was an English clergyman and zoologist. ... Eugène Simon (April 30, 1848 - November 17, 1924) was a French arachnologist. ... // Thomas Workman(1844-1900) Thomas Workman was an Irish entomologist and arachnologist who travelled widely collecting butterflies and studying spiders . ...
Thorell wrote two significant works: On European Spiders (1869) and Synonym of European Spiders (1870-73).
Thorell realised that Mygale was a popular name and that many arachnologists wanted to keep it, even though it was wrong.
Thorell argued that Cteniza was essentially the same group of spiders as the troublesome Mygale and that furthermore Theraphosa would form a better group name than Avicularia as Walckenaer's Theraphosa was the older name.
Thorell therefore decided that he was justified in proposing a new name, now a formal family name, for all the large, hairy spiders and went for Theraphosidae, taking the name from Theraphosa.