Aristotelia cynthia is a moth of the Gelechiidae family. It was described by Meyrick in 1917. It is found in Peru. The wingspan is 10-12 mm. The forewings are white irrorated with dark fuscous, the dorsal half suffused with grey and partially mixed with ochreous. There are broad blackish-fuscous oblique bars from the costa at one-sixth and one-third to the fold, the second margined beneath by a brownish-ochreous mark. A subtriangular dark fuscous blotch is found on the costa beyond the middle, termmated beneath by a brownish-ochreous mark. There is also a suffused dark fuscous apical blotch, sometimes connected with preceding in the disc but separated from it on the costa by a whitish spot. The hindwings are dark slaty-grey, pale in the cell.