The Ramapithecus were a race of small, somewhat fragile seeming hominids, believed (at the time of writing, though no longer) to be the original ancestors of modern humanity. The "Ramas" were enslaved by the Tanu when the exotics first arrived on the planet, through the use of gray torcs, a derivative form of the Tanu's own gold torcs. The Ramas were in many cases supplanted by the arrival of 21st century humans who are not only more intelligent, but more robust than the simple Ramas. They are still used however in farming, mining and other forms of unskilled manual labor, and occasionally as surrogate wombs for Tanu and silver-torc human offspring.
Ramas were known to be easily upset by violent metapsychic and psychic emanations when wearing torcs and known to flee such disruptions.
- Ramapithecus at Wikipedia