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Xenesthis is a genus of tarantulas that was first described by Eugène Louis Simon in 1891. [2] As of February 2024 [update] it contains five species, found in Colombia and Venezuela , [ 1 ] though it was previously considered to be found in Panama .
Psalmopoeus is a genus of the family Theraphosidae containing various species of tarantulas.The genus is native to Trinidad and Tobago, Colombia, Ecuador, Venezuela, Guyana, Brazil, Belize, Panama, Nicaragua, Costa Rica, Mexico, Guatemala and Honduras.
Although like most new world tarantulas it possesses urticating hairs, if provoked, they would much rather flee than attack. Their venom is not as irritating as many other species of tarantulas. The Brazilian black is a slow grower, taking up to eight years to reach maturity, reaching up to 18 cm (7 in).
Although it has hairy legs, this tarantula is an Old World species and does not have urticating hairs on its abdomen. (Urticating hairs are hairs found in most new world species (those from North and South America) that can be shed in defence, they are barbed and may cause severe itching.) It also has a leg span which may reach 8 inches (20 cm).
As most New World Tarantulas, this species lacks potent venom. Although their venom has been analyzed, and the toxin Gitx1 was found. The effects of this toxin in mice ranges from rotating movements, disorientation and paralysis, to complete paralysis and death. Depending on the amount of the toxin inserted. [3]
The skeleton tarantula, Ephebopus murinus, is a species of spider belonging to the family Theraphosidae (tarantulas), sub-family Aviculariinae. A New World species, it is native to several South American countries. Its common name is derived from the skeleton-like markings on its legs.
Psalmopoeus irminia, also known as the Venezuelan suntiger, is a species of tarantula endemic to Venezuela, Guyana and Brazil. [ 1 ] [ 2 ] They were first described in 1994 by F. Saager. Description
Like all Old World tarantulas, spiders in the genus Cyriopagopus lack the urticating hairs found in their New World counterparts, [7] hence use biting as a primary means of both attack and defence. Some Cyriopagopus species are among those reported to have more toxic venom. Although bites may cause severe pain and a range of other effects, no ...