Aristotelia ptilastis is a moth of the family Gelechiidae. It was described by Edward Meyrick in 1909. It is found in South Africa, where it has been recorded from the Western Cape.[1] [2]
The wingspan is about 11 mm. The forewings are rather dark fuscous irrorated (sprinkled) with white and with a dark fuscous dot towards the costa near the base. There are four costal spots of brown suffusion irrorated with black, becoming larger posteriorly, the first very small, the fourth ante-apical and large. Obliquely beyond the first three of these are three subdorsal tufts of scales, mixed with black anteriorly, white posteriorly, the third preceded by a yellow-ochreous spot and the second and third costal spots edged beneath by yellow-ochreous spots. There is also a small yellow-ochreous spot with two or three raised black scales in the middle of the disc. The hindwings are light grey.[3]