Yes they used to be called T. margarita, and now is Trachypithecus germaini according to IUCN
I had not finished the whole zoo this time, thus didn't know the exact number. But according to others there are exhibited in three places in this zoo now.
T. margarita is the Annamese Silvered Langur, T. germaini is the Indochinese Silvered Langur. If the two are lumped then the name in use is T. germaini.
T. margarita is the Annamese Silvered Langur, T. germaini is the Indochinese Silvered Langur. If the two are lumped then the name in use is T. germaini.