In Nepal we don’t do much research (don’t have resources) on these things so I suspect it is only a part of a bigger story. Much of the higher Himalaya is highly inaccessible and they should hold much of the unidentified species. As an example, never finding a giant Yeti can suffice on our ability to find all the unspotted species.
Well, that was the discovery of a group formed by WWF.
The group found that almost three-quarters of the discoveries between 1998 and 2008 were plants, including 21 new orchid species. But it also listed 16 amphibians, 16 reptiles, 14 fish, two birds, two mammals and at least 60 new invertebrates. Most of the discoveries have already been reported in peer-reviewed, scientific journals.
If you are interested in reading the full document it can be downloaded in pdf format from panda.org website.