Spiders, also called spiders, are a kind of arthropods with two body segments, four pairs of legs, no wings, and no chewing mouths. All types of spiders are classified into the order of Araneae; and along with scorpions, ketonggengs, mites-all eight-legged-were put into the Arachnida class. The field of study of spiders is called arachnologi.
Araneae is the largest order in arachnids and ranked seventh in total species diversity among all ordoorganismse. [2] Spiders can be found all over the world on every continent except in Antarctica, and have survived in almost all habitats with the exception of air and sea colonization. As of February 2016, at least 45,800 species [3] and 114 spider tribes have been recorded by taxonomists. [1] However, there has been a division within the scientific community about the way all the tribes are classified because since 1900 there have been more than 20 different classifications have been proposed. [4]
