Helastia corcularia

Guenée described this species as follows:

It has some relationship with our salicata, of which it has scarcely the size, but almost the colour. One sees in it almost the same lines, which are equally denticulated and badly marked; the two median are better marked, or rather it should be said that the space they limit tends to become darker in their vicinity; small, very fine white dots follow the elbow hne, and others indicate the subterminal; the fringe is lightly sinuated with blackish : inferior wings slightly paler, with the line a little distinct; beneath they are whitish-grey, with the same punctiform lines. Palpi forming a sort of beak almost as long as the head. Antennae furnished with long and very fine pectinations. The ♀ resembles the ♂, but the antennae are filiform. This species is distinguishable from H. semisignata as it is a slightly larger moth and there are distinct differences when the genitalia of a specimen is examined. H. semisignata can only be found in the North Island.

H. corcularia is endemic to New Zealand and is found throughout the South Island as well as in the Chatham Islands.

The adults are on the wing from September until May. They are nocturnal and are attracted to light. They have been collected via a mercury vapour light trap.