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Spiders, unlike insects, have only two main body parts 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 is divided into two parts by an elongated "neck". In the majority of ...
The cephalothorax, also called prosoma in some groups, is a tagma of various arthropods, comprising the head and the thorax fused together, as distinct from the abdomen behind. [1] The terms prosoma and opisthosoma are equivalent to cephalothorax and abdomen in some groups.
Cephalothorax or prosoma: One of the two main body parts , located towards the anterior end, composed of the head (cephalic region or caput) and the thorax (thoracic region), the two regions being separated by the cervical groove; covered by the carapace and bearing the eyes, legs, pedipalps and mouthparts [3]
Tagmata and major appendages of a spider: cephalothorax or prosoma and abdomen or opisthosoma The number of tagma and their names vary among taxa . For example, the extinct trilobites had three tagmata: the cephalon (meaning head), the thorax (literally meaning chest, but in this application referring to the mid-portion of the body), and the ...
The opisthosoma is the posterior part of the body in some arthropods, behind the prosoma (cephalothorax). [1] It is a distinctive feature of the subphylum Chelicerata ( arachnids , horseshoe crabs and others).
“Spiders are beneficial bugs that help control other pest insects such as flies, adult mosquitoes, ants, etc.” Capture and release can look like using a cup and a piece of paper to capture and ...
The spider bites that experts really worry about are bites from venomous spiders, particularly black widows and brown recluse spiders. A bite from one of these types of spiders can cause severe ...
The spider's body is divided into two main parts: a round cephalothorax and a larger, wider, and heart-shaped abdomen. [12] The male has a cephalothorax that typically measures 1.3 mm (0.051 in) in length and 1.25 mm (0.049 in) in width. The carapace, the hard upper part of the cephalothorax, is dark brown with black rings around the spider's eyes.