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Scorpion
| Scorpions | |
|---|---|
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| Hottentotta tamulus (Indian red scorpion) from Maharashtra, India | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
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| Order: | Scorpiones
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| Scorpion range map | |
Scorpions are eight legged venomous arachnids of the order Scorpiones. They have a long body with an extended tail with a sting. The average adult scorpion is about 9 centimetres (3.5 in) in length. The longest scorpion is the Gigantometrus swammerdami (Giant forest scorpion) from India, which can be 23 centimetres (9.1 in) long.[1] There are about 1,750 species of scorpions worldwide.[2]
The evolutionary history of scorpions goes back to the Silurian, 430 million years ago. They have adapted to a wide range of environments, and live on all continents except Antarctica. There are 13 living families. Only about 25 species have venom which can kill a human being.[3][4]
- ↑ Ruppert, Edward E. 2004. et al 2004. Invertebrate zoology. Brooks/Cole. ISBN 978-81-315-0104-7
- ↑ František Kovařík (2009). "Illustrated catalog of scorpions, Part I" (PDF). Retrieved January 22, 2011.
- ↑ ThinkQuest: Poisonous Animals: Scorpions. 2000
- ↑ Polis, Gary A. 1990. The biology of scorpions. Stanford University Press. ISBN 978-0-8047-1249-1 [1]
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