Polyrhachis placida

Polyrhachis placida is apparently a ground-nesting species with the known specimens collected from under a rock in savannah woodland.

Identification
Polyrhachis placida is similar to Polyrhachis lydiae, but has a virtually black body while in P. lydiae the body is bright metallic green with the front of head and anterior portion of the pronotum distinctly light reddish-brown. It also closely resembles Polyrhachis stricta described below, however they differ in numerous characters, including the more strongly posteriorly converging promesonotal margins in P. stricta (PMI >190 versus PMI <168 in P. placida).

Distribution based on Regional Taxon Lists
Australasian Region: Australia.

Nomenclature

 *  placida. Polyrhachis (Hagiomyrma) placida Kohout, 2013: 543, figs. 8E-F (w.) AUSTRALIA.

Type Material


Polyrhachis ‘Hagio 17’ listed by Kohout (2000: 200) actually consisted of two species, Polyrhachis placida and Polyrhachis stricta.