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The mulberry silkworm belongs to Bombycidae. It is an insect of complete metamorphosis. There are four stages of its life: egg, larva, pupa and moth. 桑蠶屬鱗翅目蠶蛾科，是一種完全變態崑蟲，一生經歷卵、幼蟲（蠶）、蛹、成蟲（蛾）四個堦段。 blog.sina.com.cn