Kiwaia plemochoa is a moth in the Gelechiidae family. It was described by Meyrick in 1916. It is found in New Zealand. The wingspan is 11–12 mm for males and 8–9 mm for females. The forewings are lighter or darker bronzy-ochreous, more or less tinged or suffused with grey and with a broad streak of whitish suffusion along the costa, becoming subcostal for more or less the distance beyond the middle. The plical and second discal stigmata are sometimes dark fuscous, sometimes obsolete. The hindwings are bluish-grey.