毛衣鱼为不完全变态昆虫，一年发生数代。
Cterolepisma villosa Fabricius is an insect of incomplete metamorphosis which reproduces several generations a year.
已定名的昆虫约有750,000种，其中85%的昆虫都是完全变态的。
There are about 750,000 species of named insects and 85% of these are holometabolous.
桑蚕属鳞翅目蚕蛾科，是一种完全变态昆虫，一生经历卵、幼虫（蚕）、蛹、成虫（蛾）四个阶段。
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.
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