Dichomeris memnonia is a moth in the Gelechiidae family. It was described by Meyrick in 1913. It is found in Brazil (Rio de Janeiro). The wingspan is about 15 mm. The forewings are dark ashy-purplish-fuscous with bronzy-blackish markings, as well as an oblique transverse bar in the disc at one-fourth, not reaching the margins. There is also a broad cloudy transverse median fascia and a moderately broad fascia from four-fifth of the costa to the tornus. There is also a narrow terminal fascia. The hindwings are dark fuscous.