Key to Polyrhachis mucronata-group species

This worker key is based on: [[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.]]

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 * Polyrhachis mucronata species-group
 * subgenus Myrmhopla
 * Polyrhachis

1

 * Pronotal humeri produced into slender, acute spines . . . . . Polyrhachis amana


 * Pronotal humeri angular or produced into broad-based short teeth . . . . . 2

2
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 * Body with rather dense, closely appressed, silvery-white or greyish pubescence . . . . . Polyrhachis retrorsa


 * Body jet-black with only very diluted appressed pubescence arising from minute shallow pits . . . . . 3

3
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 * Petiole with short lateral spines that are as long as, or shorter than distance between their bases; no intercalary spines present; pronotal humeri rounded, with or without indication of rudimentary teeth . . . . . Polyrhachis arborea


 * Petiole with relatively long lateral spines, conforming to shape of first gastral segment, and pair of intercalary teeth; pronotal humeri distinctly toothed . . . . . 4

4
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 * Petiolar spines rather broad and massive; propodeal spines about as long as distance between their bases; generally black with coxae and proximal ends of femora distinctly light to medium reddish-brown . . . . . Polyrhachis manni


 * Petiolar spines very slender; propodeal spines distinctly longer than distance between their closely approximate bases; generally black with legs dark reddish-brown; coxae a shade lighter . . . . . Polyrhachis hippomanes