Confirmation of the presence of the red-capped mangabey (Cercocebus torquatus) in Mayumba National Park, Southern Gabon and Conkouati-Douli National Park, Southern Republic of Congo

Surveys were carried out in Gabon in Mayumba National Park in 2006 and in the Conkouati-Douli National Park in the Republic of Congo in 1996 and 2000. Red-capped mangabeys, Cercocebus torquatus, (also known as white-collared mangabeys) were recorded in both parks in areas about 30 km distant from hunting pressure. The distribution of this species is known to extend from west of the Niger River to just south of the Ogooué River in Gabon, but its presence in Southern Congo, while suspected in 1949, had never been confirmed. These observations extend the confirmed published range by about 250 km south, and into the Republic of Congo. The published distribution is probably much too uniform, as the species now appears to be absent in areas with even low to medium hunting pressure. We call for resurveys of the sites where it has been previously recorded in the past to confirm continued presence and to clarify its conservation status. We also call for surveys along the coastal forests outside protected areas, especially within Gabon, to identify remaining populations