there was a male colobus imported from the USA in 2006, but really the continued breeding of them seems pretty half-hearted. They are hybrid animals as well, so of no use in conservation terms.Let's hope they bring in some more black and white colobus then and start focusing on that species at least. A few zoos in Australia have them, so why not increase the numbers...
It saddens me to see how Old World monkey species seem to be neglected so much in Australia. There are heaps of New World monkeys being bred, but the Old World ones are simply ignored: We have one group of Vervets at Werribee, one group of Dusky Leaf Monkeys at Adelaide (the most beautiful species in my view), a few Colobus in various places, a group of Francois langurs at Sydney and one at Mogo (apparently) - yet there seems to be no effort to breed any of these in large numbers...
What have the New World monkeys got that is so interesting that the Old World monkeys don't have......
Nobody seems interested in the vervets - they are very much a one-facility concern - even though they would fit perfectly into the African savannah exhibits which every zoo has. Having said that, patas were even better (larger and more colourful) and look what happened to them.
The Francois' Langurs are part of a global studbook so it's not that essential to have lots of holders here (i.e. animals can easily be moved between overseas zoos where necessary, although obviously it would be easier and less stressful for the individual animals if movements could be within Australia). Mogo was said to have two individuals on that news thread, but I don't know.
The dusky langurs are from just three (unrelated) founder animals. They breed really well at Adelaide. There really is no reason two species of langurs can't be held in Australia, but again nobody seems interested. The ZAA langur of choice is Francois' so I can't see Adelaide or other zoos importing more duskies (well, at least until Taronga give up on Francois' of course....).
Even mandrills are basically being ignored now, and almost nobody wants to touch macaques.
I think part of the overall reason is that the South American primates are generally smaller and perhaps more peaceful, so are more zoo-friendly. The zoos are also going through a "South American" spurt at the moment. Having said that, I feel like even in the northern hemiphere zoos, New World primates are generally more common than the guenons and langurs.