NZ's largest and most spectacular moth which takes 4-5 years from egg to adult, but with no functional mouthparts it lives for only a few days at most.
Putaputaweta, kamahi and beech as well as puriri, and some exotic plants such as privet.
Round and pale yellow at first, turning black. 12-14 days.
Larva feeds at first on leaf litter and fungi, but later climbs a live tree and bores into the trunk.
When it is about 10cm long it pupates in the tunnel inside the tree, where it stays for about five years.
Usually green but can range into pink and yellow. Colouration of male is variable, some with many silvery-white forewing markings. Occurs in the central and southern part of the North Island.
27 - 70mm
North Island only, native forest, parks and gardens.