At the time I didn't pay these much attention because I assumed they were dusky langurs (there are duskies at Yangon Zoo, which is where most of Yadanabon's animals came from) but after I'd left the zoo I suddenly though "oh darn, they might have been Phayre's langurs!". I've never seen a Phayre's before and I have no real idea how to tell them apart from duskies because I gather they are very similar and I have no ID guides. Mandalay is much closer to Phayre's range than dusky range (which is waaaay down in the south of Burma) so I am sort of 50-50.
Unfortunately I only took a few photos of these langurs (one pair plus youngster), almost in passing, because I was concentrating on getting photos of the other more-interesting langur in the same cage.....
Devilfish tried to send me some photos from various books but my computer did not like the attachments so I've posted here instead.
So: dusky langur or Phayre's langur.
EDIT: they have been identified as Phayre's langurs.
Mandalay province neighbors from Shan States. In this context, I am tempted to ask; may be a subspecies shanicus?
This might also explain the color differences from the original concept of the species T.phayrei under the fall within.
Because same-colored individual under this photo I found in publications HMW3 below latin name Trachypithecus phayrei shanicus. On page 622.
So just because I ask.
