Human Botfly (Larva)

Native to Central and South America; larvae inhabit the subcutaneous tissue of mammals (including humans, cattle, and dogs).

Larvae are parasitic, feeding on tissue fluids and exudates inside the host's skin. Adults have vestigial mouthparts and do not feed.

Females capture blood-sucking insects (like mosquitoes) and attach eggs to them. When the vector bites a host, body heat triggers the eggs to hatch, and larvae burrow into the skin. They develop inside a painful bump (warble), maintaining a small hole for breathing, before emerging to pupate in the soil.

Risks: Causes furuncular myiasis, characterized by painful, swollen lesions that may discharge fluid; visible movement sensation; risk of secondary bacterial infection if the larva dies or is removed improperly. Benefits: None to humans or domestic animals.