User blog comment:Kogath/Monster Hunter X Discussion/@comment-6050823-20150901223601/@comment-6050823-20150903031053

There is also the off chance that this Lagiacrus could be a subspecies of the Lagiacrus we saw in the 3rd Generation(Ivory and Abyssal don't count since they are the same species as Lagiacrus), which could also explain the new abilities we never seen. We know the Raths, Rathian, Diablos, Chameleos, and more, have subspecies that appear in certain regions that can be fairly different from a species in another region.