. . . . . "Allen's swamp monkey (Allenopithecus nigroviridis) is a primate species categorized in its own genus Allenopithecus in the Old World monkey family. Systematically, it is a sister clade to the guenons, but differs in dentition and habits."@en . "LC" . . . "Allen's swamp monkey"@en . . . . "iucn3.1" .