Last seen, 1990, and only one specimen recorded since 1907, in the Annamite Mountains of Vietnam.
There is no information on the current range or population status of the species because of a lack of survey work in appropriate areas of Viet Nam: the areas where it is most likely to occur have not been well surveyed, and appropriate methods such as camera-trapping and specimen collection have been even less extensive.
The provenance of the specimens cannot be certain, although there is no specific reason to doubt it, because they may have been acquired in trade.
