Eudonia paltomacha is a moth in the Crambidae family. It was described by Meyrick in 1884. It is found in New Zealand. The wingspan is 22–24 mm for males and about 17 mm for females. The forewings are light fuscous, irrorated with whitish. The veins are lined with blackish and there is a whitish dot in the disc beyond the middle, margined above with blackish. The hindwings are grey-whitish. Adults have been recorded on wing in January.