Apterygota

In the classification of Bey-Bienko, the aptérygotes ( Apterygota ) are one of Insecte S

The principal subclasses and S of the aptérygotes are:

subclass Proturata , order of the Protoure S
subclass Podurata , order of the Collembole S
subclass Diplurata , order of the Diploure S
subclass Thysanurata , order of the Thysanoure S

The aptérygotes are characterized by:

their small size,
the absence of wings; in fact primitive insects never had wings during their evolution.
Their development with successive moults, but without important morphological modification.

Taxonomy

Place des aptérygotes in the animal kingdom

Phylogenetic classification

phylogenetically, the aptérygotes does not constitute a natural group (Monophylétique), but para or Polyphylétique, within the hexapodes, even of the pancrustacés .

Bonds between entognathes: diploures, protoures and collemboles, is not elucidated (classically, the ellipoures joined together the two last). The monophylie of the hexapodes, group joining together these three let us tax with the insects themselves, or ectognathes, itself is discussed.

On the other hand, there is consensus on the phylogeny of the thysanoures: the machiloïdes or archéognathes are the group-brother of all the other Insects, called Dicondylia, and within those the zygentomes or lépismatoïdes are the brother group of the ptérygotes.

External bonds

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