User blog comment:Kogath/Monster Hunter Frontier G8 Discussion/@comment-6050823-20150630221240

Things You May Not Know About Zinogre(Frontier)
 * Zinogre is a new monster who was never identified in the Mezeporta district and the species' presence wasn't even known of in the Great Forest.
 * Zinogre has been identified as a Long Distance Species(遷悠種), part of a new quest type by the Guild, by the Guild and only hunters with special skills are allowed to hunt it in a Long Distance Quest.
 * Only a theory by some fans but it sounds like the Long Distance Species such as Zinogre are an Invasive Species. It should also be noted that the other two Main Series Monsters are called this as well.