Pterygota

Pterygota
Scientific classification
Domain : Eukaryota Kingdom : Animalia Subkingdom : Metazoa Phylum : Arthropoda Subphylum : Hexapoda Class : Insecta Subclass : Pterygota
Orders
&nbsp&nbsp&nbsp Palaeodictyoptera - extinct &nbsp&nbsp&nbsp Ephemeroptera (mayflies) &nbsp&nbsp&nbsp Odonata (dragonflies and damselflies) &nbsp Infraclass Neoptera &nbsp&nbsp&nbsp Blattodea (cockroaches) &nbsp&nbsp&nbsp Mantodea (mantids) &nbsp&nbsp&nbsp Isoptera (termites) &nbsp&nbsp&nbsp Zoraptera &nbsp&nbsp&nbsp Grylloblattodea &nbsp&nbsp&nbsp Dermaptera (earwigs) &nbsp&nbsp&nbsp Plecoptera (stoneflies) &nbsp&nbsp&nbsp Orthoptera (grasshoppers, crickets, katydids) &nbsp&nbsp&nbsp Phasmatodea (walking sticks, timemas) &nbsp&nbsp&nbsp Embioptera (webspinners) &nbsp&nbsp&nbsp Mantophasmatodea (gladiators) &nbsp&nbsp Superorder Hemipterodea &nbsp&nbsp&nbsp Psocoptera (booklice, barklice) &nbsp&nbsp&nbsp Phthiraptera (lice) &nbsp&nbsp&nbsp Hemiptera (true bugs) &nbsp&nbsp&nbsp Thysanoptera (thrips) &nbsp&nbsp Superorder Endopterygota &nbsp&nbsp&nbsp Miomoptera - extinct &nbsp&nbsp&nbsp Megaloptera (alderflies, etc.) &nbsp&nbsp&nbsp Raphidioptera (snakeflies) &nbsp&nbsp&nbsp Neuroptera (net-veined insects) &nbsp&nbsp&nbsp Coleoptera (beetles) &nbsp&nbsp&nbsp Strepsiptera (twisted-winged parasites) &nbsp&nbsp&nbsp Mecoptera (scorpionflies, etc.) &nbsp&nbsp&nbsp Siphonaptera (fleas) &nbsp&nbsp&nbsp Protodiptera extinct &nbsp&nbsp&nbsp Diptera (true flies) &nbsp&nbsp&nbsp Trichoptera (caddisflies) &nbsp&nbsp&nbsp Lepidoptera (butterflies, moths) &nbsp&nbsp&nbsp Hymenoptera (ants, bees, wasps, etc.)

Pterygota is a subclass of insects that includes the winged insects. It also includes insect orders that are secondarily wingless (that is, insect groups whose ancestors once had wings but that have lost them as a result of subsequent evolution).

The living insect Orders within the pterygotan group include almost all insects:

Ephemeroptera -- mayflies.

Odonata -- dragonflies and damselflies.

Orthoptera -- grasshoppers and crickets.

Mantodea -- mantids.

Blattaria -- cockroaches.

Isoptera -- termites.

Dermaptera -- earwigs.

Plecoptera -- stoneflies.

Zoraptera -- zorapterans.

Phthiraptera -- lice.

Hemiptera -- bugs.

Homoptera -- cicadas, hoppers, aphids, scale insects.

Thysanoptera -- thrips.

Neuroptera -- lace wings, ant lions, dobsonflies.

Coleoptera -- beetles.

Strepsiptera -- twisted wing parasites.

Siphonaptera -- fleas.

Diptera -- flies and mosquitoes.

Lepidoptera -- butterflies, moths, skippers.

Hymenoptera -- bees, wasps, ants.

The hexapod orders missing from this list include the Microcoryphia (jumping bristletails) and the Thysanura (silverfish and firebrats), two primitively wingless insect orders. Also not on this list are the three orders that are no longer considered to be insects: Protura, Collembola, and Diplura.