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The Goliath birdeater (Theraphosa blondi) belongs to the tarantula family Theraphosidae.Found in northern South America, it is the largest spider in the world by mass (175 g (6.2 oz)) and body length (up to 13 cm (5.1 in)), and second to the giant huntsman spider by leg span. [1]
The species was described in 1871 by the Austrian Anton Ausserer, but only received its trivial name Guarani giant Tarantula in the 21st century by the anthropologist Nils Seethaler. The name was given to the spider because of its abundance in the Guarani settlement area, whose agriculture and the associated clearing of forests extended its range.
Tarantulas comprise a group of large and often hairy spiders of the family Theraphosidae. [2] As of December 2023, 1,100 species have been identified, with 166 genera. [3] The term "tarantula" is usually used to describe members of the family Theraphosidae, although many other members of the same infraorder (Mygalomorphae) are commonly referred to as "tarantulas" or "false tarantulas".
The body length of the species can grow to 6 centimeters (about 2.36 inches) and they can have a leg span of 16 centimeters (about 6.3 inches), according to the Australian Museum.
The Chaco golden knee is a large tarantula, being able to reach between 7 and 8 inches in legspan (17.8-20.3 cm). Being a terrestrial tarantula, it has a heavy body. Mature males have longer legs and smaller bodies than females, and they possess tibial hooks or apophyses to hold back a female's fangs during mating.
The species is one of the largest tarantulas found in the United States, as it commonly reaches a leg span of 5 inches at full maturity with some females reaching a 6-inch span. Like most Aphonopelma species, it has a very slow growth rate and lives for several years before maturing. As in most tarantulas, females are massive as compared to the ...
A new tarantula species, Aphonopelma jacobii, was recently discovered in Arizona. Researchers say they are docile and have striking colors. A new tarantula species is discovered in Arizona: What ...
Pamphobeteus is a genus of tarantulas that was first described by Reginald Innes Pocock in 1901. [2] It includes some of the largest spiders in the world. They are found in South America , including the countries of Peru , Bolivia , Ecuador , Brazil , Colombia and Panama .