Much like the mosquito, the tsetse fly sucks out your blood. But the tsetse fly does it in a much more unpleasant way. The fly has tiny serrations on its mouth that saw into your skin. These insects also transmit diseases, and some can cause an illness known as “sleeping sickness.” If a person goes without treatment, the infection is usually fatal.
Sleeping sickness symptoms start with a fever, headaches, and aching muscles. But as the illness progresses, the individual becomes very tired. The person will also experience personality changes, severe confusion, and poor coordination.
There are about two or three dozen species of the tsetse fly, and they are mostly found in Africa. This bloodsucking fly is usually 6–16 millimeters (0.2–0.6 in) long and is robust with a yellowish or brownish color.
They are mainly found in woodlands and are most active in the morning. The majority of attacks on humans are committed by the male tsetse flies. The females usually stick to feeding on larger animals.