In 2006 the total known population was estimated at less than 2,000, with less than 1,000 mature individuals. There are currently 15 subpopulations, with 3 locations where subpopulations are known to have been extirpated since 1994 (L. Yongcheng pers. comm.). Although the remaining populations are well known, there are very likely to be as yet unsurveyed populations.
No one has provided updates yet.