Glossina frezili was the latest tsetse species to be identified, and it was first described in specimens from the
Congo, and in particular from the mangroves at the estuary of the
Kouilou-Niari river.
Glossina frezili is also present in
Gabon, and its presence had also been suggested in the
Central African Republic and the
Democratic Republic of the Congo. However, a review of the scientific literature for the period 1990 – 2020 only found published evidence of its presence in
Gabon, By contrast, no recent data is available from the coastal area of Congo where the species was first described, which falls within the wetland of international importance
Bas-Kouilou-Yombo. ==References==