Parastega hemisigna

Parastega hemisigna is a moth in the Gelechiidae family. It was described by Clarke in 1951. It is found in Argentina.

The wingspan is about 16 mm. The forewings are dark, shining purplish-fuscous with a white bar from the costa at one-fifth, extending to the fold, then continued along the fold to the tornus as a narrow tawny line. The extreme base and an elongate patch beyond the white bar are black and the costal edge, beyond the white bar, and cilia are sooty. The hindwings are grey.