Pterygota

Subclass of insects

Pterygota ( terrə-GOH-tə Ancient Greek: πτερυγωτός, romanized: pterugōtós, lit. 'winged') is a subclass of insects that includes all winged insects and groups which lost them secondarily. Pterygota group comprises 99.9% of all insects. The orders not included are the Archaeognatha (jumping bristletails) and the Zygentoma (silverfishes and firebrats), two primitively wingless insect orders.

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