Neoptera is a classification group that includes most part of the winged insects, specifically those that can flex their wings over their abdomens. This is in contrast with the more basal orders of winged insects (the `Palaeoptera` assemblage), which are unable to flex their wings in this way. Originally, the taxon Neoptera was proposed by А.М.....
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http://en.wikipedia.org/wiki/Neoptera
(from the article `insect`) ...are developed fully. In the Paleoptera (Figure 1) the wings are held aloft above the back, as in mayflies, or held extended permanently on each ...
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http://www.britannica.com/eb/a-z/n/25
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