Spider silk

The spider is a species of animals with two body segments, four pairs of legs, no wings and do not have chewing mouth. The spider is included in the order Araneae. Field study of spiders is called arachnologi. The main food of spiders are insects. Not all spiders are able to make nets, but they are able to make benarng silk. Spider silk from thin strands of protein fibers, but strong, comes from the spinneret glands located at the back of his body. The silk fibers are used to help the movement of the spider, swinging from one place to another, entrap their prey, making the egg sac, protect the nest hole, and others.

Spiders have eyes with single lenses, most spiders have poor eyesight, they are only sensitive to light and dark colors, but there are also some spiders have the good eyesight, they can recognize colors. In most hunting spiders recognize through vibration, both in silk webs or on land, water, or where he landed. There is also a spider that is able to taste the difference of air pressure. Sense of touch a spider is located on the hairs on his leg.

In most of the hunting spider waiting at prey to come close, they hide behind the leaves, and there are several types of spiders whose bodies camouflaged with its surroundings, it is easier to do the spider in disguise.

Spider has fangs that are usually injected in the prey, other than that owned by the fangs of spiders also serves to destroy its prey. Spider’s fangs inject their prey and suck it dry.

Some weavers spiders can wrap the body of its prey with silk twist threads. This ability is very useful especially if the prey has dangerous self-defense tool, such as bees that have a sting, or if the spider wanted to save some time whiles waiting at their prey when the preferred to enjoy it later.