Leontocebus nigricollis (Black-mantled Tamarin)
Leontocebus nigricollis (Spix, 1823)
It is a small primate. The subspecies present in Ecuador (L. n. graellsi) has a blackish or dark brown agouti crown and mantle, more or less square in shape, not extending beyond the middle of the back. The rest of the back, the flanks, the rump and the proximal 5-16 cm of the dorsal and ventral…
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