Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Crambidae
Genus: Diasemia
Species: D. grammalis
Binomial name: Diasemia grammalis
Common name: Arrowhead

Diasemia grammalis is a New Zealand snout native moth of the Crambidae family found near dry scrub and grassy areas throughout New Zealand from the coast to 1000m. The adult moths are orchard or packhouse contaminants.
The larvae feed on native grasses and herbaceous plants.
It is named ‘Arrowhead’ because of the arrow type markings on the wings.

Photographed mid-January
Arrowhead moth Diasemia grammalis.JPG 

Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0