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External anatomy. The underside and head of a female spider. Spiders, unlike insects, have only two main body parts (tagmata) instead of three: a fused head and thorax (called a cephalothorax or prosoma) and an abdomen (also called an opisthosoma). The exception to this rule are the assassin spiders in the family Archaeidae, whose cephalothorax ...
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".
Brachypelma smithi is a large spider. A sample of seven females had a total body length (excluding chelicerae and spinnerets) in the range 52–59 mm (2.0–2.3 in). A sample of eight males were slightly smaller, with a total body length in the range 44–49 mm (1.7–1.9 in). Although males have slightly shorter bodies, they have longer legs.
Lycosa tarantula. Lycosa tarantula is the species originally known as the tarantula, a name that nowadays in English commonly refers to spiders in another family entirely, the Theraphosidae. It now may be better called the tarantula wolf spider, being in the wolf spider family, the Lycosidae. L. tarantula is a large species found in southern ...
Huntsman spider. Huntsman spiders, members of the family Sparassidae (formerly Heteropodidae), are known by this name because of their speed and mode of hunting. [citation needed] They are also called giant crab spiders because of their size and appearance. Larger species sometimes are referred to as wood spiders, because of their preference ...
The basal parts of the chelicerae are the two iridescent green mouthparts. The chelicerae (/ kəˈlɪsəriː /) are the mouthparts of the subphylum Chelicerata, an arthropod group that includes arachnids, horseshoe crabs, and sea spiders. Commonly referred to as "jaws", chelicerae may be shaped as either articulated fangs, or as a type of pincers.
B. hamorii is a terrestrial tarantula native to the western faces of the Sierra Madre Occidental and Sierra Madre del Sur mountain ranges in the Mexican states of Colima, Jalisco, and Michoacán. [4][5] The species is a large spider, adult females having a total body length over 50 mm (2 in) and males having legs up to 75 mm (3 in) long.
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 ...