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Orthoptera: Difference between revisions
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Orthoptera are an order of insects. (Grasshoppers, crickets, and locusts are major example insects of Orthoptera.) Phylum of the Orthoptera is Arthropoda, because they can be distinguish to 3 parts: head, | Orthoptera are an order of insects. (Grasshoppers, crickets, and locusts are major example insects of Orthoptera.) Phylum of the Orthoptera is Arthropoda, because they can be distinguish to 3 parts: head, thorax, and belly. Also, they are enclosed in outer covering skin. | ||
The Orthoptera produce sounds by rubbing their wings or legs. (Usually, male Orthoptera make sounds to attract females during breeding time. Most time, females are silent.) The female Orthoptera hatch eggs in the ground and in plants. The Orthoptera are dioecious species (“two houses” in Greek). To produce the eggs, both male and female are needed and they need to breed together. They are hemimetabolous species. In other words, they do not have pupa stage, but they look like small adult. [http://www.earthlife.net/insects/orthopta.html] | The Orthoptera produce sounds by rubbing their wings or legs. (Usually, male Orthoptera make sounds to attract females during breeding time. Most time, females are silent.) The female Orthoptera hatch eggs in the ground and in plants. The Orthoptera are dioecious species (“two houses” in Greek). To produce the eggs, both male and female are needed and they need to breed together. They are hemimetabolous species. In other words, they do not have pupa stage, but they look like small adult. [http://www.earthlife.net/insects/orthopta.html] | ||
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== Reproduction == | == Reproduction == | ||
Most Orthoptera can produce sounds. They produce sounds to attract mates, to alarm, and to protect their territories from others. (Usually, the male Orthoptera produce the sounds.) By volume and pitch of the sounds, species can be distinguished. | |||
Males rub their wings or legs to produce the sounds. Some of the species grind jaws to produce the sounds. The grasshoppers rub inside of their jumping legs to edges of their forewings to make the sounds. When they spread their wings, the sounds are amplified. | |||
By sound, smell, touch, and sight, the male Orthoptera attract the female ones. Each of species uses different methods to attract the females. The grasshoppers dance by flying. The crickets and the katydids produce two different kinds of sounds. First one uses for long range. When the females come near by the males, the male crickets and katydids produce quieter sounds. Not only the sounds, but also the crickets and katydids use smell to attract the mates. The female giant wetas produce pheromones to attract the males. | |||
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One of examples by the swarms of locusts was written in the Bible. Exodus 10:12-15 said, “''And the LORD said to Moses, 'Stretch out your hand over Egypt so that locusts will swarm over the land and devour everything growing in the fields, everything left by the hail.' So Moses stretched out his staff over Egypt, and the LORD made an east wind blow across the land all that day and all that night. By morning the wind had brought the locusts; they invaded all Egypt and settled down in every area of the country in great numbers. Never before had there been such a plague of locusts, nor will there ever be again. They covered all the ground until it was black. They devoured all that was left after the hail—everything growing in the fields and the fruit on the trees. Nothing green remained on tree or plant in all the land of Egypt.”'' | One of examples by the swarms of locusts was written in the Bible. Exodus 10:12-15 said, “''And the LORD said to Moses, 'Stretch out your hand over Egypt so that locusts will swarm over the land and devour everything growing in the fields, everything left by the hail.' So Moses stretched out his staff over Egypt, and the LORD made an east wind blow across the land all that day and all that night. By morning the wind had brought the locusts; they invaded all Egypt and settled down in every area of the country in great numbers. Never before had there been such a plague of locusts, nor will there ever be again. They covered all the ground until it was black. They devoured all that was left after the hail—everything growing in the fields and the fruit on the trees. Nothing green remained on tree or plant in all the land of Egypt.”'' | ||
