The tsetse fly is a blood-sucking insect commonly found in sub-Saharan Africa. In the local African languages, it is referred to by various names such as "n'zingu" in Swahili, "tse-tse" in French, and "tsetse" in Portuguese. The scientific name for the tsetse fly is Glossina, which comes from the Greek word for "tongue" due to its long proboscis used for feeding. In certain regions, the tsetse fly is also known as the "tik-tik" or "kungu" fly. Despite its small size, the tsetse fly poses a significant threat to both humans and livestock as it spreads the deadly sleeping sickness disease.