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.
IndonesiaSpiders are predators (carnivores), sometimes even cannibals. Its main prey is insects. Almost all types of spiders, with the exception of about 150 species of the Uloboridae and Holarchaeidae tribes, and the Mesothelae subordo, are able to inject through a pair of fangs to their enemies or prey. However, out of tens of thousands of species, only about 200 species have bites that can harm people.
Not all spiders make a net to catch prey, but all are capable of producing silk threads - it is a thin but powerful strand of protein fiber - from a gland (called a spinneret) located at the back of its body. These silk fibers are very useful for helping the movement of spiders, swinging from one place to another, trapping the prey, making egg bags, protecting the nest hole, and others
Insects (also called Insecta, read "insects") are the main groups of six-limbed (Arthropods) six-pairs (six pairs); hence they are also called Hexapoda (from Greek meaning "six-legged")
