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Exopterygota
External Wings
Google: Exopterygota Wikipedia: Exopterygota YouTube: Exopterygota Search HHG
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The Exopterygota, also known as Hemipterodea, are a superorder of insects of the subclass Pterygota in the infraclass Neoptera, in which the young resemble adults but have externally-developing wings. They undergo a modest change between immature and adult, without going through a pupal stage. The nymphs develop gradually into adults through a process of moulting.

The Exopterygota are a highly diverse insect superorder, with at least 130,000 living species divided between 15 orders. They include termites, locusts, thrips, lice and stick insects, among many other types of insects.

They are distinguished from the Endopterygota (or Holometabola) by the way in which their wings develop. Endopterygota (meaning literally "internal winged forms") develop wings inside the body and undergo an elaborate metamorphosis involving a pupal stage. Exopterygota ("external winged forms") develop wings on the outside of their bodies without going through a true pupal stage, though a few have something resembling a pupa (e.g., Aleyrodidae).

Ephemeroptera (mayflies) and Odonata (dragonflies and damselflies) also have gradual wing development, this being a plesiomorphic trait. These two orders belong to the paraphyletic infraclass Palaeoptera however, which is not included in Neoptera. As opposed to Neoptera, they cannot fold their wings over their back in the horizontal plane, only vertically (as damselflies do) if at all.

These branches come from Exopterygota :

Notoptera - Ice-crawlers, gladiators
Plecoptera
Embioptera
Zoraptera
Dermaptera
Orthoptera - Grasshoppers-Crickets-Locusts
Phasmatodea
Blattaria
Isoptera
Mantodea
Psocoptera
Thysanoptera
Phthiraptera
Hemiptera - True Bugs

What's This?

Exopterygota
External Wings
Neoptera
New Wings
Pterygota
Winged
Dicondylia
Pre-Winged Insects
Insecta
Insects
Hexapoda
Six Legs
Arthropoda
Jointed Feet
Ecdysozoa
Molting
Protostomia
Mouth First
Bilateria
Two-Way Symmetry
Eumetazoa
True Higher Animals
Animalia
Animals
Eukaryota
Eukaryota
Cells with a Nucleus



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Exopterygota

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