Spider belongs to phylum Arthropoda, class Arachnida, order Araneae. This order has 3 sub-orders. The Mygalomorphae (the primitive spiders), the Aranaeomorphae (the modern spiders) and the Mesothelae, with one family of spiders the Liphistiidae. Every spider belongs to a family, which is further divided into genus, followed by species. As a rule genus and species are printed in italics.
Spiders are characterized by the following Eight walking legs , two main body parts Cephalothorax and abdomen, jaws adapted for tearing or piercing prey , 6 to 8 simple eyes and a skeleton outside the body