Ah, that's what those primates are. Gotcha.Because honey badgers and lion-tailed macaques have no association with rivers
I was thinking of the tropical rainforests having rivers in them like the Amazon and I can see the Western Ghats and Silent Valley National Park where the macaques can be found appear to have a few rivers in it. So, I'll hold on to that personal feeling for a rain forest/river pack but it could just as easily be a location pack. But with these 2 animals being found in Western India, maybe ..

Learn about the mountains of the Western Ghats
The mountains of the Western Ghats are more like rolling hills than snow-covered peaks. But what they lack in height they make up for in wildlife.
More elephants ( 30% of asian elephants )
Lion tailed macaque
Sloth Bear ( already have )
Nilgiri Tahrs

Exploring Endemic Mammals of the Western Ghats
Discover the unique endemic mammals of India's Western Ghats, a biodiversity hotspot rich in rare species and natural beauty

Nilgiri Langur
And the possibility of Asiatic lion and Asiatic cheetah but, maybe we will be lucky and have some unique animals rather than ones very similar to others