Polyrhachis pilosa

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

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Specimen Labels

Opportunistic in choosing its nesting sites, in recent years Polyrhachis pilosa has become increasingly common in suburban parks and gardens, with their silk nests built not only between leaves, but also in various artificial cavities around houses, including door and window frames (Kohout 2006).

Identification

Polyrhachis pilosa is similar to Polyrhachis mackayi both having an evenly convex mesosomal dorsum, a completely unarmed propodeum and subequal petiolar spines. However, the former is easily distinguished by the cover of relatively long, erect hairs on the dorsum of the head and mesosoma (Kohout 2006).

Keys including this Species

Distribution

The main distribution of P. pilosa is similar to that of Polyrhachis mackayi, reaching its southern limit at about Taree in northern New South Wales. In the north P. pilosa appears to be rather patchily distributed, with confirmed records from around Townsville and as far north and west as Fourty Mile Scrub and Undara (ANA). (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

Abundance

Common within its main range (~ south of Townsville to Taree).

Biology

Castes

Nomenclature

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

  • pilosa. Polyrhachis (Cyrtomyrma) rastellata var. pilosa Donisthorpe, 1938c: 256 (w.) AUSTRALIA. [First available use of Polyrhachis rastellata r. laevior var. pilosa Forel, 1902h: 527; unavailable name (Taylor, 1986: 34).] Raised to species: Kohout & Taylor, 1990: 518. See also: Kohout, 2006b: 102.

Type Material

  • Polyrhachis (Cyrtomyrma) rastellata pilosa Donisthorpe, 1938: Syntype, worker(s), Wollongbar, Richmond River, New South Wales, Australia, American Museum of Natural History.
  • Polyrhachis (Cyrtomyrma) rastellata pilosa Donisthorpe, 1938: Syntype, worker(s), Wollongbar, Richmond River, New South Wales, Australia, Australian National Insect Collection.
  • Polyrhachis (Cyrtomyrma) rastellata pilosa Donisthorpe, 1938: Syntype, worker(s), Wollongbar, Richmond River, New South Wales, Australia, Musee d'Histoire Naturelle Genève.
  • Polyrhachis (Cyrtomyrma) rastellata pilosa Donisthorpe, 1938: Syntype, worker(s), Wollongbar, Richmond River, New South Wales, Australia, Naturhistoriska Riksmuseet.

Description

Worker

Metanotum sans trace d'epines. Tres semblable a la var. debelis Emery, mais tout le corps assez abondamment pourvu de poils dresses fins. Ca et la meme un poil sur les pattes. (Forel 1902)

Type Material

Wollongbar, Richmond River NEW SOUTH WALES, col. Froggatt. Syntype workers from American Museum of Natural History examined 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 256, worker described)
  • Forel, A. 1902. Fourmis nouvelles d’Australie. Revue Suisse de Zoologie 10: 405-548.
  • 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.
  • Kohout, R. J.; Taylor, R. W. 1990. Notes on Australian ants of the genus Polyrhachis Fr. Smith, with a synonymic list of the species (Hymenoptera: Formicidae: Formicinae). Mem. Qld. Mus. 28: 509-522 (page 518, Raised to species)