The Popa langur is endemic to Myanmar’s central dry zone. It has a dark brown or gray-brown back, a contrasting pale underside, black hands and feet, and broad white rings around the eyes. A 2020 study documented several separated populations; one group may include hybrids with another langur.
Its back is dark brown or gray-brown, sharply contrasting with a gray or whitish underside. The hands and feet are black. The black face has a broad pale muzzle and wide white rings fully encircling the eyes; long irregular head hair forms a crest.
The paper reports three newly documented populations in addition to Mount Popa and Bago Yoma. Forests in the central dry zone are degraded and fragmented by agriculture, timber extraction, and grazing. The Myogyi Monastery group may include hybrids, so it is difficult to count it as a pure population of this species.
An extinction-risk assessment has not been added yet.