On Jul 4, 2013 I spotted similar a crab in Arippa forest in a small stream but the pictures were of low quality.
On Sept 14 2014 I spotted this orange crab near a water canal inside a broken shack outside the forest area 4 km away from the Peppara Dam entrance.
An interesting plant on a tree (parasite?), there are no leaves, only stems but they serve as leaves. About 7 or 8 feet from the ground.