Distribution New Zealand. Only one species in the North Island (A. enysii). Some species are widely distributed, most are localized.
Systematics Revised by Dugdale (1994). Largest genus of New Zealand Hepialidae. Antennae plumose, wings intricate patterns of brown, tan and white. Position of puncture La and seat L3 in the larvae is similar to that of Antihepialus (Dugdale, 1994) but evaluation of the phylogenetic significance of t his simmilarity will require larval analysis of all Exoporian genera.
Habitat Grasslands, bog meadow, forest. Sealevel to subalpine.
Biology Some species have brachpterous females (see images). Larvae tunnel into soil or turf layer subtending plants such as Oreobolus. Larvae of Aoraia sp. constructs a vertical tunnel with one or two lateral chambers where faecal pellets are stored. At the surface of the Oreobolus cushion the larva excvates a number of meandering channels where it comes out at night to feed (Grehan, 1989).