tarantula

tarantula (tərăn`chələ), name applied chiefly to several species of the large, hairy spiders of the families Theraphosidae and Dipluridae of North and South America. The body of a tarantula may be as much as 3 in. (7.6 cm) long and, with legs extended, as much as 10 in. (25.4 cm) across. The North American tarantula, Dugesiella hentzi, has a leg spread of up to 6 in. (15.2 cm) and is common in parts of the SW United States. The largest tarantulas may kill small vertebrates, but their usual food is other arthropods. The bite of a tarantula may be painful but is not usually dangerous to humans. Some Asian spiders are also called tarantulas, and there is a tailless whip scorpion genus Tarantula. Originally the name was applied to a spider of the wolf spider family, Lycosa tarentula, of S Europe, whose bite was supposed to cause tarantism, a nervous condition characterized by hysteria; the best cure was believed to be strenuous and prolonged dancing of the tarantella. Spider families are classified in the phylum Arthropoda, class Arachnida, order Araneae.

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tarantula

Mexican red-kneed tarantula (Brachypelma smithii).

(credit: Lynam/Tom Stack & Associates)

Name that originally referred to the wolf spider but now covers any spider in the family Theraphosidae. It is found from the southwestern U.S. to South America. Many species live in a burrow, and most have a hairy body and long, hairy legs. They are nocturnal predators of insects and, occasionally, amphibians and mice. Certain South American tarantulas eat small birds. In the southwestern U.S., tarantulas of the genus Aphonopelma may have a body 2 in. (5 cm) long and a leg spread of nearly 5 in. (12 cm). They may inflict a painful bite if provoked. The most common U.S. species, Eurypelma californicum, may live up to 30 years.

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tarantula

spider with a deadly venom. [Zoology: NCE, 2695]

See : Deadliness