DistributionNew Zealand. Two vicariant species - southern North Island and northern South Island (D. oreas) and southern South Islands (D. fusca).
SystematicsRevised by Dugdale (1994). Member of Old World clade with Oxycanine venation.HabitatTussock grasslandBiologyAdults emerge in the summer. Larvae live shafts in the soil or in suface soil and plant debris and feed on leaves of tussock grasses.
ReferencesDugdale, J. S. 1994. Hepialidae (Insecta: Lepidopera). Fauna xxxxof New Zealand 30, 1-163. Dioxycanus fuscus. Image courtesy of Lloyd Esler© inaturalist.org creative commons lisence
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