Ichneutica falsidica

Meyrick described the species as follows:

♀. 43 mm. Head whitish mixed with grey and blackish. Thorax grey mixed with whitish. Abdomen ochreous-grey-whitish. Forewings rather elongate-triangular, apex obtuse, termen slightly waved, obliquely rounded; fuscous-grey, mostly overlaid with white suffusion; subbasal line cloudy, dark fuscous, not reaching dorsum; first and second lines indistinctly margined with dark-fuscous irroration, first slightly curved, second waved, strongly curved outwards on upper 2⁄3; median shade of dark-fuscous irroration, bent near costa; orbicular-suboval, whitish, edged laterally with dark fuscous; reniform whitish, lower third fuscous-grey edged with whitish : anterior edge of subterminail line formed by a waved shade of dark-fuscous irroration. Hindwings fuscous. This species is variable in appearance. I. falsidica is similar in appearance to I. panda but the former usually has dark dashes along the hind-wings. I. panda is normally the smaller of the two species. The wingspan of I. falsidica males is between 37 and 42 mm and between 40 and 44 mm for females.

It is endemic to New Zealand. It is found in the North Island but only in the Tararua Range and Mount Taranaki. This species is also found in the South Island but is more common on the west side of that island.

Adults of this species are on the wing from January to March. Adult moths have been seen flying during sunny days. This species is drawn to light.

The life history of this species is unknown. The host species of the larvae of I. falsidica are unknown.

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