from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A taxonomic subclass within the class Insecta — the wingless insects.
from The Century Dictionary and Cyclopedia
- A group of insects including only the order Thysanura, which contains wingless forms only that are supposed to have descended from wingless ancestors.
Lepidoptera and Diptera, to maxillary structures: has also been used for the hypopharynx, and that use might be adopted: a median organ of the hypopharynx in Apterygota.
This is the rule (see Chapters II and III) with the Apterygota, the Orthoptera, and most of the Hemiptera.
Those curious lowly insects, belonging to the two orders of the Collembola and Thysanura, none of whose members ever develop wings at all, form a third sub-class, the _Apterygota_ (see