User blog comment:Lord Loss/Monster Hunter Frontier Season Forward 5/@comment-64.141.96.176-20121107000048/@comment-969093-20121110153252

覇種 (hashu). Ha as this kanji stands for supremacy, shu with the displayed kanji stands for species. It's actually an upgraded form of HC. Supremacy Quests give out SR proofs.

Subspecies and Rare Species has nothing to do with Supremacy Species. Black Rathian didn't start as a Supremacy Species. Supremacy Species is a new quest type that was introduced at the end of Forward 4.

Players advertise their quests as Supremacy X in mhfo. Like Supremacy Black (hashu kuro -　覇黒). This refers to SR300 Black Rathian btw.