Group | Approximate number of described living species |
---|---|
Jumping bristletails (Archaeognatha) | 550 |
Silverfish (Zygentoma) | 575 |
PTERYGOTE (WINGED) INSECTS (PTERYGOTA) | |
Mayflies (Ephemeroptera) | 3,250 |
Dragonflies and damselflies (Odonata) | 6,000 |
Neopterans (Neoptera)b | |
Ic | 35 |
Gladiators (Mantophasmatodea) | 15 |
Stoneflies (Plecoptera) | 3,800 |
Webspinners (Embioptera) | 500 |
Angel insects (Zoraptera) | 40 |
Earwigs (Dermaptera) | 2,000 |
Grasshoppers and crickets (Orthoptera) | 24,000 |
Stick insects (Phasmida) | 3,000 |
Cockroaches (Blattodea) | 4,500 |
Termites (Isoptera) | 3,000 |
Mantids (Mantodea) | 2,500 |
Booklice and barklice (Psocoptera) | 5,750 |
Thrips (Thysanoptera) | 6,000 |
Lice (Phthiraptera) | 5,000 |
True bugs, cicadas, aphids, leafhoppers (Hemiptera) | 104,000 |
Holometabolous neopterans (Holometabola)c | |
Ants, bees, wasps, sawflies (Hymenoptera) | 150,000 |
Beetles (Coleoptera) | 390,000 |
Strepsipterans (Strepsiptera) | 650 |
Lacewings, ant lions, mantidflies (Neuroptera) | 6,000 |
Dobsonflies, alderflies, fishflies (Megaloptera) | 350 |
Snakeflies (Raphidoptera) | 250 |
Scorpionflies (Mecoptera) | 800 |
Fleas (Siphonaptera) | 2,000 |
True flies (Diptera) | 125,000 |
Caddisflies (Trichoptera) | 12,000 |
Butterflies and moths (Lepidoptera) | 180,000 |
aThe hexapod relatives of insects include the springtails (Collembola; 3,000 spp.), tw bNeopteran insects can tuck their wings close to their bodies. cHolometabolous insects are neopterans that undergo complete metamorphosis. |