Spiders have:two main body parts, the head and thorax combined called the cephalothorax and an abdomen. eight walking legs. simple eyes; spiders usually have eight eyes (some have six or fewer), but few have good eyesight. jaws adapted for tearing or piercing prey.Spiders are a group of arachnids that have eight legs, two main body parts (a cephalothorax and abdomen) and fangs that produce venom. They can also make silk from their spinnerets at the tip of their abdomen.Spiders belong to the kingdom Animal, phylum Arthropoda, class Arachnida, and order Araneae. There are about 40,000 species of spiders and they all have segmented bodies, a hard exoskeleton, and appendages that are jointed.The anatomy of spiders includes many characteristics shared with other arachnids. These characteristics include bodies divided into two tagmata (sections or segments), eight jointed legs, no wings or antennae, the presence of chelicerae and pedipalps, simple eyes, and an exoskeleton, which is periodically shed.