A silkworm has four developmental stages in its life: egg, larva (silkworm), pupa (cocoon), and adult (moth). It is a beneficial insect that can spin silk and form cocoons.

Eggs: They are oval, a little smaller than millet grains, gray-green or gray-purple in color, about 1,700 to 1,800 grains per square centimeter.

Larva (silkworm): The appearance of silkworm is divided into head, chest and abdomen. The head is what we usually call the mouth, the chest has three links, including three pairs of thorax and feet, and the abdomen has ten links and four pairs of abdominal feet. There are approximately 2,100 to 2,300 ant silkworms per square centimeter.

Pupa (cocoon): Mature silkworms pupate about 5 days after they are clustered. The pupal body is spindle-shaped and yellowish brown.

Adult (moth): It has a pair of white scaly wings, but cannot fly. They die 2 to 3 days after mating and laying eggs.