Speargrass moth
Common NameSpeargrass moth
Scientific NameIchneutica steropastis
FamilyNoctuidae
SubfamilyHadeninae
Wingspan (mm)40
Wing Patternsolid
Primary Colorsbrown, grey
HabitatAlpine and subalpine grasslands, tussocklands, rocky areas
Geographic RangeNew Zealand (South Island)
Host PlantsAciphylla species (speargrass)
Flight PeriodDecember to February
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesThe larvae feed on the leaves of speargrass (Aciphylla species). The moth is nocturnal.
Identification TipsIdentified by its plain, cryptic brownish-grey coloration, robust body, and its specific association with high-altitude New Zealand habitats where speargrass is prevalent.
Description
A medium-sized, uniformly dull brownish-grey moth with plain forewings, providing excellent camouflage against rocks and vegetation.
