User blog comment:Kogath/Monster Hunter X Discussion/@comment-184612-20151125234555

"Kogath, what are you doing? Why did all those variants get renamed"

In-game the monsters are referred to by their full names, so; 紅兜アオアシラ (Crimson Helmet Arzuros). Therefore, they have been renamed to better match the in-game names. Sure, it looks a little awkward, but it's more accurate. IF there is a localization of MHX, they will probably be shortened, but for now this is what we'll use on the Wikia.

These monsters are also handled differently than your standard variants, which only used the main monster's name. Internal files are also calling them "Named", so Named Variants will be the term we use moving forward. This will be the last terminology change unless a localized version gets announced.