Parastega chionostigma is a moth in the family Gelechiidae. It was described by Walsingham in 1911. It is found in Panama, Ecuador and Suriname.[1]
The wingspan is about 19 mm. The forewings are deep purplish black, with two distinct, clearly defined, white spots. One ovate, placed obliquely, touching the costa at one-fourth from the base, its outer extremity resting on the fold, beyond which are a few ochreous scales in the fold. The other is semi-lunate, its base resting on the costa before the apex. There is a minute white dot at the extreme apex. The hindwings are smoky brownish fuscous.[2]