Dichomeris ardesiella is a moth in the Gelechiidae family. It was described by Walsingham in 1911. It is found in Mexico (Veracruz). The wingspan is about 15 mm. The forewings are dark greyish fuscous, with a slight purplish gloss. The extreme costa is very narrowly edged with ochreous as far as the commencement of the costal cilia, where a slight, very pale ochreous shade is projected downward on the wing-surface, apparently indicating the line of a vanished fascia. A minute blackish spot, at the extreme base of the costa, is followed by another, sometimes obsolete, on the cell at one-fifth, and beyond this, in the same line, is another discal spot at two-fifths, followed by another at the end of the cell, from which descends a short, inwardly bowed line of similarly dark scales. There is