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| blackish-green guenon (Allenpithecus nigroviridis); swamp guenon (Allenpithecus nigroviridis); Allen's swamp monkey (Allenpithecus nigroviridis) | |||
| swamp guenon (Cercopithecus (Allenopithecus) nigroviridis); Allen's monkey (Cercopithecus (Allenopithecus) nigroviridis) | |||