It is also stipulated that a proto-nigrocincta may have come from Borneo during the Quaternary glaciation. On southern part of the Indonesian island of Sulawesi, most colonies are found above 400 m elevation, unlike its cousin A. cerana, of which most colonies are found below 400 m elevation.
The text states that a proto-nigrocincta may have originated from Borneo during the Quaternary glaciation. In contrast to its cousin A. cerana, which is found at lower elevations on Sulawesi, most colonies of the proto-nigrocincta are located above 400 meters.