Hagiomyrma

This is currently a subgenus of Polyrhachis. Please see Polyrhachis for further information.

Identification
Kohout (2013) - Hagiomyrma is one of the relatively well-defined subgenera of the genus Polyrhachis. A marginate mesosomal dorsum, mostly rounded pronotal humeri and more-or-less horizontal, posteriorly directed propodeal spines, make most members of this subgenus easily recognisable.

Key to Polyrhachis Hagiomyrma group species

Nomenclature

 *  HAGIOMYRMA [subgenus of Polyrhachis]
 * Hagiomyrma Wheeler, W.M. 1911c: 860 [as subgenus of Polyrhachis]. Type-species: Formica ammon, by original designation.

Description
Kohout (2013)

Worker
Small to moderately large ants (HL 1.30-2.80) with general characteristics of the genus. Anterior clypeal margin usually with distinct, denticulate, median flange (as in P. ammon), simply truncate (as in P. anderseni) or with deep, open, ‘V’-shaped emargination (as in P. metella Fr. Smith). Clypeus with median, longitudinal carina; sinuate or straight in profile. Frontal carinae sinuate with moderately raised margins at midlength; central area relatively wide with more-or-less distinct frontal furrow or weakly raised carina. Dorsum of mesosoma distinctly laterally marginate along its entire length. Pronotal dorsum generally near quadrate with lateral margins subparallel or converging posteriorly (as in P. schenkii Forel, P. trapezoidea Mayr or P. weiri ); more rarely margins anteriorly converging (strongly as in P. metella Fr. Smith or weakly as in P. darlingtoni, P. dougcooki and P. feehani ). Pronotal humeri unarmed with margins weakly to moderately laminate, often dilated, widely or narrowly rounded or more rarely bluntly angular (as in P. schenkii Forel and P. vernoni ). Promesonotal suture distinct; metanotal groove often distinct laterally, but weakly impressed dorsally, or virtually lacking. Propodeum armed with a pair of more-or-less horizontal, subparallel or divergent, acute spines. Petiole scale-like or rarely columnar (as in trapezoidea-group species), armed with a pair of acute spines that can be subparallel or divergent, horizontal or curved downwards (as in P. uncaria ), upwards (as in P. stricta ), or re-curved and hook-like (as in P. ammonoeides Roger); dorsum narrowly rounded or rarely with flat platform that can be horizontal (as in P. thusnelda Forel) or sloping posteriorly (as in P. trapezoidea Mayr, P. darlingtoni and P. nourlangie ).

Queen
Very similar to worker, with usual characters identifying full sexuality, including three ocelli and complete thoracic structure with wings. Besides larger size (except in P. semiaurata Mayr), differing in distinctly larger eyes and distinctly shorter propodeal and petiolar spines. Sculpturation, pilosity, pubescence and colour virtually identical to that in worker.

Male
Males are unknown for most of the species and as such their treatment was not attempted here. However, where known, their presence in collections is indicated under each species.