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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. These insects are usually solitary, but under certain circumstances they become more abundant and change their behaviour and habits, becoming gregarious .
Locusts are highly mobile, and usually fly with the wind at a speed of about 15 to 20 kilometres per hour (9.3 to 12.4 mph). Swarms can travel 5 to 130 km or more in a day. Locust swarms can vary from less than one square kilometre to several hundred square kilometres with 40 to 80 million individuals per square kilometre.
Description: English: Swarm of locusts near Satrokala, Madagascar (May 2014) Deutsch: Ein Schwarm Wanderheuschrecken in der Nähe von Satrokala, Madagaskar (Mai ...
The desert locust is a species of orthopteran in the family Acrididae, subfamily Cyrtacanthacridinae. [2] There are two subspecies, one called Schistocerca gregaria gregaria, the better known and of huge economic importance, located north of the equator, and the other, Schistocerca gregaria flaviventris, [9] [10] which has a smaller range in south-west Africa and is of less economic importance ...
A bystander in Al Khobar, Saudi Arabia, captured the moment when swarms of locusts coated the sky above him on Feb. 21. According to National Geographic, locusts are sometimes solitary insects ...
Much of the time, this locust adopts a solitary lifestyle, but under certain conditions, it becomes gregarious; the young nymphs, known as hoppers, form bands that move together and the adult insects form swarms that may reach plague proportions. Plagues of this locust took place from 1891 to 1903 and again from 1928 to 1941.
A mathematical model of locust swarms could help in the development of new strategies to control their devastating migration. Skip to main content. 24/7 Help. For premium support please call: ...
When food and climatic conditions are favourable, huge swarms of locusts may develop. The first recorded swarm was in 1844, with further outbreaks from the 1870s onward. After 1900, the intensity and frequency of locust swarms increased, and since the 1920s, a pattern has developed of localised, high-density populations in some locations most ...