Lioptilodes subantarcticus is a moth of the family Pterophoridae. It is known from Argentina and Brazil.[1]
The wingspan is 19–21 mm. Adults are on wing in January and February.
The larvae feed on Gnaphistylis itatiatiae, Senecio juergensi, Senecio conyzaefolius, Senecio pinnatus and Senecio oleosus.