Entognatha : Order Collembola (springtails)
Order Diplura (two-tailed bristletails)
Order Protura (proturans)
Apterygota : Order Archaeognatha (bristletails)
Order Zygentoma (silverfish & firebrats)
Palaeoptera: Order Ephemeroptera (mayflies)
Order Odonata (dragonflies & damselfies)
Polyneoptera : Order Dermaptera (earwigs)
Order Dictyoptera (cockroaches, termites & mantids)
Order Orthoptera (grasshoppers, crickets & bush-crickets)
Order Phasmida (stick-insects)
Order Plecoptera (stoneflies)
Paraneoptera : Order Hemiptera (true bugs)
Order Phthiraptera (lice)
Order Psocoptera (booklice & barklice)
Order Thysanoptera (thrips)
Endopterygota: Order Coleoptera (beetles)
Order Diptera (true flies)
Order Hymenoptera (ants, bees & wasps)
Order Lepidoptera (moths & butterflies)
Order Mecoptera (scorpionflies)
Order Megaloptera (alderflies)
Order Neuroptera (lacewings)
Order Raphidioptera (snakeflies)
Order Siphonaptera (fleas)
Order Strepsiptera (stylops)
Order Trichoptera (caddisflies).