The Maués marmoset is a small monkey with a dark shoulder mantle and upright ear tufts. It has been recorded in several forest types south of the Amazon River.
It has a dark shoulder mantle, upright ear tufts, and a banded back.
A 2004 field survey produced eight occurrence records, seven from direct sightings. The records came from primary forest, secondary growth, and seasonally flooded igapó forest.
An extinction-risk assessment has not been added yet.