Description of locust insects with a solitary appearance:
In this appearance, these insects are green with black markings, while the adult insect becomes greyish-green in color until it reaches sexual maturity.
Main locations of desert locusts
1- The first region is located in Sudan, Eritrea, and Abyssinia
2-The second region is located in western Sudan and the Sahara desert regions
3- The third region is Yemen, after the regions of the Arabian Peninsula
The life cycle of these insects?
When the insects become sexually mature, mating occurs between females and males, and the fertilization process may take several hours, and one male can fertilize several females. The females choose suitable places with dry, moist soil in which to lay their eggs, using an egg-laying machine, which they insert into the soil and secrete a substance. She lays one egg after another until she finishes the egg mass. The egg mass ranges from 20 to 99 eggs in one hole, and a single female can lay 300 eggs during her life cycle.
Bridges often choose canals, waterways, light agricultural lands, and valleys, and bury their eggs in them.
Description of locust eggs
Locust eggs are characterized by their spindle-shaped shape, with a yellow color. As the embryo grows, the color becomes brown. They need a high enough humidity for the embryo to grow. The lower the humidity level, the lower the hatching rate of the eggs. The incubation period for the eggs is 10 days, and this period varies depending on the temperature. This period may be longer in the winter to More than two months, the length of the young nymphs in their first ages ranges from 11 to 12 millimeters and increases in size with each molt. Their voraciousness in feeding increases and they begin to form wings at the third age. The length of the nymphs stage lasts from three to four months, and the number of nymphs stages increases until it reaches The adult insect has five lifespans and may reach sexual maturity after 2-4 weeks when appropriate conditions exist for growth until it reaches the adult stage.
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| Swarms of desert locusts |
Symptoms of injury and damage:
Swarms of locusts feed voraciously on existing plants and green spaces, leaving their families with dry leaves.
Desert locust control
It is preferable that control be carried out in desert locust breeding areas through the following methods
1- By getting rid of eggs by plowing the land and obtaining egg masses without exposing them to biological predators and weather factors, or by burning these masses.
2- Combating nymphs by using flamethrowers, which are machine guns filled with gasoline.
3- Using poisonous baits by mixing the pesticide with wet bran and scattering it early in the morning in places where freedom is gathered.
4- Biological control using some predators that feed on locust eggs and some parasites and insect parasites that feed on eggs, while adult insects and insects use some types of birds, lizards, snakes and some insect predators, such as the predatory praying mantis, which feeds on insects and adult insects, as well as using various types of Intrusive mites
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