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Social cohesion becomes necessary among grasshoppers because of their ability to jump or fly large distances, and the song can serve to limit dispersal and guide others to favourable habitat. The generalised song can vary in phraseology and intensity, and is modified in the presence of a rival male, and changes again to a courtship song when a ...
Orthoptera (from Ancient Greek ὀρθός (orthós) 'straight' and πτερά (pterá) 'wings') is an order of insects that comprises the grasshoppers, locusts, and crickets, including closely related insects, such as the bush crickets or katydids and wētā.
Insects are the only group of invertebrates that have evolved wings and flight. Insects first flew in the Carboniferous, some 300 to 350 million years ago, making them the first animals to evolve flight. Wings may have evolved from appendages on the sides of existing limbs, which already had nerves, joints, and muscles used for other purposes.
There are two basic aerodynamic models of insect flight. Most insects use a method that creates a spiralling leading edge vortex. [19] [20] Some very small insects use the fling-and-clap or Weis-Fogh mechanism in which the wings clap together above the insect's body and then fling apart. As they fling open, the air gets sucked in and creates a ...
Locusts, such as this migratory locust (Locusta migratoria), are grasshoppers in a migratory phase of their life. Millions of swarming Australian plague locusts on the move. Locusts (derived from the Latin locusta, locust or lobster [1]) are various species of short-horned grasshoppers in the family Acrididae that have a swarming phase.
This summer, thousands of grasshoppers will take flight in northeast California, eating everything in their path and likely destroying crops along the way.
Insects have spiracles on their exoskeletons to allow air to enter the trachea. [1] [page needed] In insects, the tracheal tubes primarily deliver oxygen directly into the insects' tissues. The spiracles can be opened and closed in an efficient manner to reduce water loss. This is done by contracting closer muscles surrounding the spiracle.
The theory is that flying insects do not notice the web, fly into it, and get stuck. Orb webs created by Araneidae, Tetragnathidae and Theridosomatidae spiders are made of sticky silk so the ...