Key to Polyrhachis flavoflagellata species-group

This worker key is based on: [[Media:Kohout-2008.pdf|Kohout, R.J. 2009a. A new species of the Polyrhachis (Myrmhopla) flavoflagellata-group from Borneo. Asian Myrmecology 2(2008):11-16. PDF]]

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 * Polyrhachis
 * Myrmhopla
 * Polyrhachis flavoflagellata species-group

1.
Lateral petiolar spines reduced to blunt, stumplike, lateral projections (Cambodia).....stylifera

Lateral petiolar spines relatively long, acute, dorsoposteriorly diverging..... 2

2.
Anterior clypeal margin with deeply emarginate median flange; dorsum of petiole without intercalary teeth or spines.....storki

Anterior clypeal margin entire or simplytruncate with a shallow median emargination; dorsum of petiole with a pair of distinct intercalary spines..... 3

3.
Propodeal spines distinctly dorsoposteriorly elevated from their bases; bicoloured, body black, base of gaster and appendages mostly light reddish-brown.....flavoflagellata

Propodeal spines more-or-less horizontal; virtually unicoloured, body black, appendages black or very dark reddish-brown.....muara