Dichomeris aestuosa is a moth in the Gelechiidae family. It was described by Meyrick in 1913. It is found in South Africa and Zimbabwe. The wingspan is 8-11 mm. The forewings are dark fuscous, irrorated with whitish. The stigmata is very indistinct, cloudy and dark fuscous, the plical obliquely before the first discal. There is a nearly straight or slightly curved ochreous-whitish transverse streak from two-thirds of the costa to the dorsum before the tornus, sometimes produced anteriorly along the costa. The apical area beyond this is darker, with some undefined blackish marginal dots. The hindwings are grey.