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单词 apterygota
释义 DictionarySeeAmetabola

Apterygota


Apterygota

[‚ap·tə·rə′gōd·ə] (invertebrate zoology) A subclass of the Insecta characterized by being primitively wingless.

Apterygota


Apterygota

or

Ametabola

a subclass of primitive insects that have never evolved wings, and that undergo little or no METAMORPHOSIS. There is little change in form from INSTAR to instar. The subclass includes silverfish (Thysanura), springtails (Collembola), and Protura. Compare PTERYGOTA.
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