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Kingdom: Animalia
Phylum: Arthropoda
(unranked): Pancrustacea
Subphylum: Hexapoda

Extant

Monocondylia	Archaeognatha (jumping bristletails)

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Zygentoma (silverfish, firebrats)

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Ephemeropteroidea	Ephemeroptera (mayflies)
Odonatoptera	Odonata (dragonflies, damselflies)

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Plecoptera (stoneflies) Dermaptera (earwigs) Embioptera (webspinners) Phasmatodea (stick and leaf insects) Orthoptera (crickets, wetas, grasshoppers, locusts) Zoraptera (angel insects)
Notoptera (Xenonomia)	Grylloblattodea (ice-crawlers) Mantophasmatodea (gladiators)
Dictyoptera	Blattodea (cockroaches, termites) Mantodea (mantises)

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Paraneoptera *	Psocodea (barklice, lice) Thysanoptera (thrips) Hemiptera (cicadas, aphids, true bugs)

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Hymenoptera (sawflies, wasps, ants, bees)

Neuropteroidea

Coleopterida	Strepsiptera (twisted-winged parasites) Coleoptera (beetles)
Neuropterida	Raphidioptera (snakeflies) Megaloptera (alderflies, dobsonflies, fishflies) Neuroptera (net-winged insects: lacewings, mantidflies, antlions)

Panorpida
(Mecopterida)

Antliophora	Mecoptera (scorpionflies) + Siphonaptera (fleas) Diptera (gnats, mosquitoes, flies)
Amphiesmenoptera	Trichoptera (caddisflies) Lepidoptera (moths, butterflies)

Four most speciose orders are marked in bold
Italic are paraphyletic groups
Based on Sasaki et al. (2013)

Extinct

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