Nyxetes

Nyxetes is a genus of true weevils, belonging to the tribe Eugnomini. There is a single species, Nyxetes bidens, which is endemic to New Zealand.

Biology

This species apparently is an obligate associate of certain mealybug species, with the weevil larvae feeding on "a black fungoid substance" that appears at the mealybug feeding sites, eventually forming a subspherical, gall-like cavity inhabited by one weevil larva and multiple mealybugs.