Tsetse flies, or genus Glossina, occur only in tropical Africa - south of the Sahara. Tsetse flies are blood-feeding flies that act as a vector, spreading the disease trypanosomiasis, or ‘sleeping sickness’, which can be fatal in humans and animals if left untreated.
Female flies deposit single larvae to mature in damp places, emerging 20 to 60 days later. Flies tend to rest in forested areas, often near to water. They feed on blood, preferably animals, though sometimes on humans.
Flies are attracted by large moving objects, blue/black colours and by carbon dioxide emissions from groups of cattle or humans. Traps and screens are the preferred methods of control.