Polyrhachis mackayi

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Polyrhachis mackayi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Polyrhachis
Subgenus: Cyrtomyrma
Species: P. mackayi
Binomial name
Polyrhachis mackayi
Donisthorpe, 1938

Polyrhachis mackayi casent0903417 p 1 high.jpg

Polyrhachis mackayi casent0903417 d 1 high.jpg

Specimen Labels

Polyrhachis mackayi is a relatively uncommon species that builds its nests between the leaves of trees and shrubs, mostly along the margins of lowland rainforests and woodlands (Kohout 2006).

Identification

Characterised by the evenly convex profile of the mesosomal dorsum, rounded pronotal humeri, a completely unarmed propodeum and relatively short and subequal petiolar spines (Kohout 2006).

Keys including this Species

Distribution

From just north of Mackay in Queensland south to Taree in northern New South Wales, where, together with Polyrhachis pilosa it represents the southern-most limit of the distribution of the subgenus (Kohout 2006).

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • mackayi. Polyrhachis (Cyrtomyrma) mackayi Donisthorpe, 1938c: 258, fig. 9 (w.q.) AUSTRALIA. See also: Kohout, 2006b: 100.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Type Material

  • Polyrhachis (Cyrtomyrma) mackayi Donisthorpe, 1938: Syntype, workers, queen, Mackay, Queensland, Australia, The Natural History Museum.

Description

Worker

Black, shining, usual sculpture; legs dark brown, antennre and tarsi black, palpi light brown. Head as in rastellata, but not so broad, broader than in burmanensis. Thorax not nearly so massive and broad as in rastellata, but broader than in burmanensis. Scale narrow as in the latter, but with smaller blunter teeth. Long. 4·7 mm.

Queen

Similar to the worker, except the usual caste differences, but the shoulders are more rounded and the teeth on the scale are blunter. Long. 6.3 mm.

Type Material

QUEENSLAND, Mackay, col. R.E. Turner. Syntype workers and queen The Natural History Museum - as reported by Kohout (2006).

References

  • Donisthorpe, H. 1938c. The subgenus Cyrtomyrma Forel of Polyrhachis Smith, and descriptions of new species, etc. Ann. Mag. Nat. Hist. 11(1): 246-267 (page 258, fig. 9 worker, queen described)
  • Kohout, R. J. 2006. Review of Polyrhachis (Cyrtomyrma) Forel (Hymenoptera: Formicidae: Formicinae) of Australia, Borneo, New Guinea and the Solomon Islands with descriptions of new species. Memoirs of the Queensland Museum. 52:87-146.