User blog comment:Lord Loss/Monster Appreciation Week: Black Diablos/@comment-6005381-20130629150422

I would say its just lazy designing, but since its only a one off really, its actually a really good idea, having a clear line between genders in one of the regular monster species (basically where its not like the raths or nono and kamo (dont quote me on those names)). I especially enjoy the quests to hunt one black and one normal, it makes for really intrugring combat.