Botflies are parasitic insects that lay their eggs on the skin of mammals, including humans. Once the eggs hatch, the larvae burrow into the host's skin and develop under the surface. When the larvae are fully grown, they pupate and eventually emerge from the host to complete their life cycle.
In the case of the human botfly (Dermatobia hominis), when the larvae are ready to pupate, they typically create a breathing hole or pore in the skin to facilitate their exit. This pore is called a "warble." The warble allows the mature larva to breathe while it prepares for pupation. When the larva is ready to emerge, it pushes its way out of the warble and falls to the ground.
The process of the botfly larva emerging from the host's skin can be quite painful and distressing for the host. It is essential to seek medical attention if you suspect you have a botfly larva infestation. A healthcare professional can safely remove the larva to prevent complications and ensure proper wound care.
To avoid botfly infestations, it is essential to take precautions in areas where the botfly is prevalent, such as Central and South America. Wearing protective clothing and using insect repellents can help reduce the risk of botfly eggs being deposited on the skin. If you notice any unusual skin lesions or have been in a botfly-prone area, it is best to seek medical advice promptly.