Key to Polyrhachis flavicornis-group species from Sulawesi

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. PDF]]

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Polyrhachis

1

 * Dorsal body surfaces, including appendages, with numerous, relatively long, erect hairs . . . . . Polyrhachis chaita


 * Dorsal body surfaces without erect hairs . . . . . 2

2
return to couplet #1
 * Larger species (HL >1.53) . . . . . 3


 * Smaller species (HL <1.50) . . . . . 4

3
return to couplet #2
 * Propodeal dorsum strongly transverse, more than twice as wide as long; petiolar dorsum with distinct pair of acute intercalary spines . . . . . Polyrhachis sulawesiensis


 * Propodeal dorsum only weakly transverse, only marginally wider than long; petiolar dorsum without intercalary teeth or spines . . . . . Polyrhachis neglecta

4
return to couplet #2
 * Petiolar dorsum with pair of slender, strongly diverging, lateral spines and pair of short, acute, intercalary spines or teeth . . . . . Polyrhachis hilaris


 * Petiolar dorsum with pair of rather thick, weakly diverging lateral spines; intercalary teeth lacking, or only feebly indicated in some specimens . . . . . Polyrhachis fruhstorferi