Derotettiginae is a subfamily of cicadas and includes two species Derotettix mendosensis and Derotettix wagneri . It is restricted to the Dry Chaco and Monte de Llanuras y Mesettas ecoregions of Argentina.

The subfamily characters include the head with eyes being wider than the width of the pronotum, a postclypeus that is rounded in transverse cross section. The mesonotum has no sound producing structures and the forewing has no pterostigma.