Spix’s red-handed howler[1] (Alouatta discolor) is a species of howler monkey endemic to the southeastern Amazon in Brazil.
- As the name suggests, Spix’s red-handed howler monkeys have hands (and feet) that lack the same inky black, reddish, or yellowish-brown fur that covers the rest of their bodies.
- They have a thick, prehensile tail, a patch of bare skin on the tip, coarse, shaggy hair, and a deep jaw surrounding an enlarged larynx and hyoid bone.
- All species of Alouatta have a schizodactylous or zygodactylous grip, which means that their first two digits are opposite the other three.
