different between thysanura vs bristletail

English

bristle +? tail

bristletail (plural bristletail or bristletails)

Any of various small, active six-legged arthropods that have two or three bristles at the ends of their abdomens and that do not have wings. These were formerly classified together in the insect subclass Apterygota or the order Thysanura but are no longer considered closely related:
1. jumping bristletails in the insect order Archaeognatha [from 18th c.]
2. insects in the order Zygentoma such as silverfish and firebrats
3. two-pronged bristletails in the hexapod order Diplura

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