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Basic characteristics of arachnids include four pairs of legs (1) and a body divided into two segments: the cephalothorax (2) and the abdomen (3). The ventral side of a brown widow spider. The epigastric plates and furrow are visible, as well as the hourglass marking on the underside of the abdomen, which is a characteristic feature of widow ...
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".
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In this spider diagram, the position of the book lungs is labelled 1. Spider book lungs (cross section) Internal anatomy of a female spider, book lungs shown in pink A book lung is a type of respiration organ used for atmospheric gas-exchange that is present in many arachnids, such as scorpions and spiders.
Description: Diagram of basic surface anatomy and regions of the stomach. Drawn in Inkscape. Based on diagram from Moore, K.L., & Agur, A.M. (2007).
Abdomen or opisthosoma: One of the two main body parts , located towards the posterior end; see also Abdomen § Other animals Accessory claw : Modified setae at the tip of the tarsus in web-building spiders; used with tarsal claws to grip strands of the web [ 1 ]
Poecilotheria metallica, also known as the peacock tarantula, [1] is an Old World species of tarantula. It is the only blue species of the genus Poecilotheria. Like others in its genus it exhibits an intricate fractal-like pattern on the abdomen. The species' natural habitat is deciduous forest in Andhra Pradesh, in central southern India.
The spider's abdomen, carapace, and legs have the same basic coloration, though the legs typically have brightly colored rings. The carapace has a star-shaped pattern, with a fishbone pattern present on the abdomen. The eyes are clustered together on a raised part of the carapace (in common with all tarantulas). The body is covered with short ...