The screwworm is a type of fly belonging to the family Calliphoridae, specifically the genus Cochliomyia. These flies are known for their larvae, which are parasitic and can infest the wounds of mammals, including livestock and humans. The larvae feed on living tissue, causing significant harm and potential death to the host if not treated. Screwworms are particularly notorious in agriculture, as they can lead to severe economic losses in livestock production. Control measures include the use of sterile insect techniques and insecticides. Successful eradication programs have been implemented in various regions, significantly reducing their populations and impact.