Tucumania tapiacola is a species of snout moth in the genus Tucumania. It was described by Dyar in 1925. It is found in Argentina and has been introduced to Australia and South Africa. The wingspan is 24–34 mm. The forewings are soft grey, with a slightly darker pattern of markings. The hindwings are pearly white, but dusky toward the outer margin. The length of the life cycle is irregular, but both in Argentina and in Australia there are usually two complete generations and a third partial generation annually.