New monkey species discovered in Butiama

The only primates I have seen in Butiama are baboons and velvet monkeys. A few years ago, I caught a glimpse of a monkey I had never seen in Butiama which disappeared into the nearby forest as soon as it saw me.

A few days ago I saw the monkey again and managed to photograph it.

It has side burns and has a thick fur and a long tail. I do not recall seeing this species anywhere except perhaps in the forest area on the slopes of Mt. Kilimanjaro where a similar species is found.