User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-6050823-20140722173052/@comment-6050823-20140723230944

Despite Nerusukyura being found in the Old Desert and like Pike has said multiple times, the Old Desert isn't to far away from the Old Jungle, where Khezus can be found, so the Nerusukyura Subspecies could go there to kill Khezus for their skin.

Another thing to note is that normal Nerusukyura will leave an old web and wander to all sorts of other areas before weaving a new web.