Silkworm - N silk moth or mulberry caterpillar is one of the insects of the caterpillar species from which the economy has a very high value. For this caterpillar is the sole caterpillar of fiber or silk thread.
The silkworm food is a mulberry leaf. In addition to mulberry silkworm leaves will not eat it.
In development into a caterpillar, then the silkworm egg takes about 10 days to hatch. After hatching which then becomes the caterpillar it will form a raw cocoon.
Well, this raw cocoon which will be spun into a silk thread along the 300 meters to 900 meters. The spun silk or silk thread has a diameter of about 10 micrometers.
The surprising thing about silkworms is that of food. It can be said that silkworms include a very greedy type of caterpillars in terms of food. This caterpillar will eat all day long day and night.
And this is done solely to grow and grow faster. As for things to know that silkworms undergo four phases of skin change.
When the color is yellowish and tighter skin this indicates that silkworms will soon wrap themselves by turning into a cocoon.
To produce a good silk thread and also have a high quality then before the silkworm becomes mature (marked silkworms will bite the cocoon), we must immediately boil the silkworm.
This silk caterpillar cocoon is designed to kill silkworms to make it easier to decipher the fibers. But if we are a little late then the resulting silk is no longer appreciated with high quality.