The first of its kind, the Seance Fly is a hybrid of demon and insect, completely sentient and in tune with the dark arts. They are servants of the dark lords, performing sacrifices, summonings, and even birth rituals before mating and after birthing new brood. Their presence is said to be the worst type of infestation, as they summon demons to the natural world on a near constant basis. The females have noticeably longer limbs with a smaller head and have equal standing in the brood as males.