PlantSyNZ mentions Hexomyza coprosmae as causing woody stem calls in Coprosma but I'm not sure if that's the only species that can do this.
Caught in pitfall trap in port enclosure
Caught in pitfall trap in port enclosure
In a sample from Corinne Watts, labelled as follows:
Torehape invertebrate sampling 2022/23
Restored peat lane
Plot M34
Trap A
14 Dec 2022-7 Feb 2023
Possible atypical form of Cantao parentum or possible new species.