Polyrhachis inermis species-group

[[Media:Kohout 2008a.pdf|Kohout, R.J. 2008a. A review of the Polyrhachis ants of Sulawesi with keys and descriptions of new species (Hymenoptera: Formicidae: Formicinae). Memoirs of the Queensland Museum. 52:255-317. PDF]]

The inermis species-group was introduced by Bolton (1974). Included in the group were several species placed by Emery (1925) within the very similar. Both species-groups include some of the smallest members of the subgenus. The inermis -group is characterised by well developed pronotal spines, a petiole with two short lateral spines and an entire, arcuate dorsal petiolar margin, and by closely approximated frontal carinae producing an extremely narrow central area. In contrast, species included here within the zopyra-group have the pronotal spines reduced to mere teeth, a petiole armed with four, more-or-less distinct teeth and more widely separared frontal carinae and a broader central area.

Species

 * Polyrhachis inermis
 * Polyrhachis orsylla