Bot flies, also known as horse flies or warble flies, are a type of insect found in many parts of the world. They are typically found in warm, tropical regions, but can also be found in temperate climates. The most common species of bot flies are found in North and South America, Africa, and parts of Asia.Bot flies are known for their parasitic behavior, as they lay their eggs on the skin of mammals, including horses, cattle, sheep, deer, and even humans. The eggs hatch into larvae, which burrow into the host's skin and form a lump, known as a warble. The larvae then develop inside the warble, feeding on the host's tissue before eventually emerging as adult flies.In horses, a common species of bot fly is the 'Gasterophilus intestinalis', which lays eggs on the horse's legs and lower belly. The larvae then burrow into the horse's mouth and develop in the stomach lining. In humans, the 'Dermatobia hominis' bot fly is known to lay its eggs on mosquitoes, which then transfer the eggs to humans when they bite. The larvae then burrow into the skin, causing a painful lump and even a fever.Bot flies are not only a nuisance for their hosts, but can also cause serious health problems. The warbles and burrows caused by the larvae can become infected and lead to abscesses and other complications. In addition, the feeding of the larvae can cause anemia and other nutritional deficiencies in the host.To prevent bot fly infestation, it is important to control the population of the flies through insecticides and other measures. In addition, regular grooming and inspection of horses and other animals can help detect and remove bot fly eggs before they hatch. For humans, wearing long sleeves and pants, and using mosquito repellent can help prevent bot fly infestation.Overall, bot flies are a type of parasitic insect that can cause serious health problems for a variety of mammals, including horses, cattle, sheep, deer, and humans. They are commonly found in warm, tropical regions but can also be found in temperate climates. To prevent bot fly infestation, it is important to control the population of the flies and take preventive measures such as regular grooming and inspection, wearing long sleeves and pants and using mosquito repellent.karin81@mail.ru