Bombyx mori silk only once annually. The second type is called bivoltine and is normally found in China, Japan, and Korea. The breeding process of this type takes place twice annually, a feat made possible through the slightly warmer climates and the resulting two life cycles. The polyvoltine type of mulberry silkworm can only be found in the tropics. The eggs are laid by female moths and hatch within nine to 12 days, so the resulting type can have up to eight separate life cycles throughout the year. Eggs take about 14 days to hatch into larvae, which eat continuously. They have
Bombyx hybrid have to be kept in the same container. Since "Bombyx" hybrids are much more common than the other variation more is known about them. The domesticated silkworm ("B. mori") was domesticated from wild silkworm ("B. mandarina") more than 5,000 years ago. Bombyx hybrid The "Bombyx" hybrid is a hybrid between a female "Bombyx mori" moth and a male "Bombyx mandarina" moth. They produce silkworm larvae like all species of "Bombyx". The larvae look a lot like the other variations. They are brown in the first half and gray at the bottom half, but they get larger black spots than other