[Image is a black and white drawing of a Machine People woman, a hominid with a flat, thin, but generally human face, no eyebrows, and hair only at the base of her skull looping up, over her ears into side burn area. End description.]
Ringworld hominids are incredibly varied, from the animal-like, carnivorous vampires to the technologically advanced, empire running, omnivorous Machine People to the tribal, herbivorous Grass Giants. All Ringworld hominids share a recent common ancestor, the Pak (an ancestor they share with Terran hominids), and are capable of inter-species, but are not cross-fertile.
Rishathra is defined as