Key to Polyrhachis cyaniventris species-group workers

This worker key is based on: [[Media:Sorger & Zettel 2009.pdf|Sorger, D. M. and H. Zettel. 2009. Polyrhachis (Myrma) cyaniventris F. Smith, 1858 (Hymenoptera: Formicidae) and a related new ant species from the Philippines. Zootaxa 2174: 27-37.]]

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 * Polyrhachis
 * Myrma
 * Polyrhachis cyaniventris species-group group diagnosis

1

 * Mesosoma dorsally with numerous short black setae. Numerous setae on entire body. Microsculpture of gaster overlaid with fine longitudinal striation. Sides of propodeum with longitudinal rugae overlaying microsculpture . . . . . Polyrhachis cyaniventris


 * Mesosoma dorsally without setae. Other parts of body with a few short black setae . . . . . 2

2
return to couplet #1
 * Small species (TL of holotype 8.6 mm; HW of holotype 2.00 mm). Vertex with 10 setae (Fig. 2). Pronotal spines in cross-section flat. Dorsal and posterior faces of propodeum separated by almost straight ridge. Head and mesosoma with bluish shimmer . . . . . Polyrhachis baca


 * Large species (TL 10.1–11.5 mm; HW 2.19–2.50 mm). Vertex with 0–2 setae. Pronotal spines in cross-section triangular and massive. Dorsal and posterior faces of propodeum separated by sinuate ridge, slightly depressed medially. Head and mesosoma with greenish to coppery shimmer . . . . . Polyrhachis pirata