The first stage is the egg stage. A female spider lays thousands of eggs. The eggs are wrapped in a silk egg sac. The eggs hatch in a short time.The second stage is the egg sac stage. The egg sac is made of silk and is usually white. Sometimes the female spider carries the sac on her back or in her mouth. Sometimes she hides the sac under a rock or attached to a plant.The third stage is the spiderlings stage. Spiderlings hatch from the eggs. They look like tiny adults. Some spiderlings are on their own and get no help from their mother.
There are 35,000 species of spiders worldwide. Many species of spiders are household pests. All spiders are predators feeding mainly on insects and other small arthopode body divided into two-region viz. cephalothoraxes and abdomen. Four pairs of legs are present. Antenna is absent.