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New-world tarantulas—those indigenous to the Americas—have bites that generally pose little threat to humans (other than causing localized pain). The primary defense deployed by these spiders is by means of urticating hairs, which can cause irritant symptoms in humans. Cobalt blue tarantula (Haplopelma lividum), an old-world species
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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]
Researchers did not provide a DNA analysis of the new species. Satan tarantulas live in forests of the Andes mountains between elevations of about 2,800 feet and about 3,100 feet, researchers said
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".
Synanceia verrucosa, a species of stonefish, is lined with dorsal spines that deliver an intensely painful and lethal venom. It is sometimes called the most venomous fish in the world. There are at least 1,200 species of venomous fish, including: Stonefishes (Synanceia spp.) Lionfishes (Pterois spp.) Scorpionfishes
It is an Old World tarantula, so has no urticating hairs; its only defenses are biting and fleeing. This tarantula is known to have more potent venom than many tarantula species [ citation needed ] , but Cyriopagopus albostriatus venom was shown in a study to have the ability to regulate activity in voltage-gated sodium channels, which are ...
Their most dangerous predator is the tarantula hawk. Locally, it is known as a matacacata ("tarantula-killer"). This is a very large parasitoid wasp, with an iridescent blue-green body and orange-red wings that grows to about 2 inches or more in length. It captures the spider in its burrow or sometimes in the open and stings it to paralyze it ...