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NAM*AN*IMALS | |||||||||||||||||||||
| A Social and Academic Resource for Animals Student Leaders at Namanu Outdoor School. | ||||||||||||||||||||||
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Insects
3 pairs of legs (six total) 3 body segments 1 or 2 pairs of wings One pair of antennae Insects include beetles, ants, flies, bees, etc. Insects are the most numerous group of animals. There are more species of beetles than all other non-insect animal species combined. Insects have been around for 390 million years. The African Goliath Beetle is the heaviest insect in the world and weighs 100 grams (the same as 33 pennies). Arachnids
4 pairs of legs (eight legs total) 2 body segments No wings No antennae Spiders inject enzymes into prey that digest the insides. The spider then drinks the liquefied innards through hollow fangs. Arachnids include spiders, ticks, mites, and scorpions. The longest lived spiders are the tarantulas, some live up to 28 years. Centipedes
1 pair of legs per body segment (total of two legs per body segment) No wings One pair of antennae Centipedes are carnivorous, they eat smaller insects. Centipedes have a poison gland to kill prey. The longest centipede in the world is the giant scolopenders of South America and Asia, which can reach up to 11 inches. Millipedes
2 pairs of legs per body segment (total of four legs per body segment) No wings One pair of antennae Millipedes are herbivores and decomposers. They eat forest duff layer and put nutrients back in the soil for plants to use and grow. They decompose 90% of the duff layer of soil. Millipedes have stink glands to repel predators and they curl into a tight ball when threatened. The millipede with the most legs lives in California and has 375 pairs of legs, that's 750 total legs! Crustaceans
5 or more pairs of legs (ten or more legs total) No wings 2 pair of antennae Many body segments Crustaceans have specialized legs for walking, swimming, crushing, and for defense. Crustaceans include crabs, lobsters, barnacles and crayfish. The pill bug, or sow bug (sometimes called the potato bug) is the only land crustacean. |
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| Old NAM*AN*IMALS Link Link Link Link Link Link Link | ||||||||||||||||||||||