ApterygotayoudaoicibaDictYouDict[Apterygota 词源字典]
"A group of insects which includes the bristletails and springtails, having a primitive body form without wings and no distinct larval stage", Modern Latin Apterygota, from Greek a- 'not' + pterugōtos 'winged'.[Apterygota etymology, Apterygota origin, 英语词源]