Apterygota

(redirected from Apterygote)
Also found in: Encyclopedia.

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.
Mentioned in ?
References in periodicals archive ?
Whereas Smith (1909) did not offer a trace maker and Walker (1985) suggested only an arthropod producer, Buatois et al (1998b) tentatively attributed the Carboniferous examples to apterygote insects due to their close association with the body imprint Tonganoxichnus ottawensis.
This phenomenon applies to most malacostracan Crustacea, which begin reproduction before somatic growth is completed (Hartnoll, 1985), similar to apterygote insects and myriapods.
Overall biological activity can be measured by the amount of carbon dioxide emitted and, more analytically, by drawing up an inventory and count of 1) the mesofauna (nematodes, annelid worms, microarthropods, arachnids, apterygote and pterygote insects, myriapods, isopod and decapod crustaceans, rotifers, tardigrades, molluscs), 2) the microbiota (protoctists and the microorganisms that perform the essential processes of denitrification, ammonification, and nitrification; the other bacteria; and microsymbionts like Rhizobium, Klebsiella, Spirillum, or Azospirillum), and 3) the mycota (fungi and lichens).