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Sightings often placed their swarms in numbers far larger than any other locust species, with one famous sighting in 1875 estimated at 198,000 square miles (510,000 km 2) in size (greater than the area of California), weighing 27.5 million tons and consisting of some 12.5 trillion insects, the greatest concentration of animals ever recorded ...
Traditional locust control uses insecticides from the ground or air, but newer biological control methods are proving effective. Swarming behaviour decreased in the 20th century, but despite modern surveillance and control methods, swarms can still form; when suitable weather conditions occur and vigilance lapses, plagues can occur.
India has been able to bring swarms of desert locusts under control in two key oilseed producing states. [43] [44] In May, amid the COVID-19 pandemic, parts of India such as Rajasthan and Madhya Pradesh were severely affected by locust swarms measuring a kilometer wide, the worst locust attack in 27 years.
Swarm Year Location Size Type Plagues of Egypt: Not verified Egypt: Desert locust: Locust Plague of 1874: 1874 United States: Rocky Mountain locust: Albert's swarm: 1875 United States: 3.5 – 12.5 trillion Rocky Mountain locust: 1915 Ottoman Syria locust infestation: 1915 Israel, Lebanon, and Syria: 2003–2005 Africa locust infestation: 2003 ...
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 ...
The Locust Plague of 1874, or the Grasshopper Plague of 1874, occurred in the summer of 1874 when hordes of Rocky Mountain locusts invaded the Great Plains in the United States and Canada. The locusts swarmed over an estimated 2,000,000 square miles (5,200,000 km 2) and caused millions of dollars' worth of damage. Residents described swarms so ...
List of locust swarms; 0–9. 1915 Ottoman Syria locust plague; 2013 Madagascar locust plague; 2019–2022 locust infestation; A. Albert's swarm; January 2016 ...
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. An adult locust can consume its own weight (several grams) in fresh food per day. For every million locusts, one ton of food is eaten.