Germarostes (Germarostes) carltoni, new species, keys to the subgenus Germarostes Paulian in Howden and Gill (2000). It has ten-segmented antennae, rounded anterior clypeal edge and slightly thickened outer hind tibial apices typical of the nominate subgenus but differs from all known species in the genus in being flightless and possessing very long, slender legs. This new species is described, figured and a brief discussion of its placement in the genus is given.