Polyrhachis procera

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Polyrhachis procera
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Polyrhachis
Subgenus: Myrma
Species: P. procera
Binomial name
Polyrhachis procera
Emery, 1897

Polyrhachis procera casent0905617 p 1 high.jpg

Polyrhachis procera casent0905617 d 1 high.jpg

Specimen Labels

Identification

A member of the Polyrhachis continua species group in the subgenus Myrma

P. procera is similar to Polyrhachis continua but differs by its larger size and more pronounced striation of the head and thorax. P. procera has a clypeus that in profile is gently sinuate, with the anterior margin vaguely obtuse medially (entire in modern specimens). In contrast, the clypeus in P. continua is almost straight in profile, with only a shallow depression anteriorly and the anterior margin is distinctly truncate medially. The pronotal spines in P. procera are relatively long and slender and the lateral margins of mesonotal dorsum virtually flat and converge anteriorly. In P. continua the pronotal spines are distinctly shorter and the lateral margins of mesonotal dorsum are raised and converge posteriorly.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: New Guinea.

Distribution based on specimens

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The above specimen data are provided by AntWeb. Please see Polyrhachis procera for further details

Biology

Castes

Male and immature stages unknown.

Nomenclature

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

  • procera. Polyrhachis continua var. procera Emery, 1897d: 581 (w.q.) NEW GUINEA. Combination in P. (Myrma): Emery, 1925b: 200. Raised to species: Kohout, 1998: 519.

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

Description

Worker

Kohout (2013) - Dimensions (syntype cited first): TL c. 12.40, 11.89-12.85 ; HL 2.90, 2.87-3.06; HW 1.93, 1.93-2.09; CI 66, 66-69; SL 4.28, 4.18-4.54; SI 222, 216-222; PW 1.86, 1.76-1.91; MTL 4.48, 4.43-4.79 (1+3 measured).

Queen

Kohout (2013) - Dimensions: TL c. 12.70; HL 2.93; HW 2.18; CI 74; SL 3.93; SI 180; PW 2.62; MTL 3.88 (1 measured).

Besides characters associated with full sexuality and the shorter pronotal and petiolar spines, the single alate queen resembles the workers very closely. The pilosity is somewhat denser, notably along the leading edge of the antennal scapes and the mesosomal dorsum.

Type Material

References

  • Emery, C. 1897e. Viaggio di Lamberto Loria nella Papuasia orientale. XVIII. Formiche raccolte nella Nuova Guinea dal Dott. Lamberto Loria. [concl.]. Ann. Mus. Civ. Stor. Nat. 38[=(2(18): 577-594 (page 581, worker, queen described)
  • Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183: 1-302 (page 200, Combination in P. (Myrma))
  • Kohout, R. J. 1998. New synonyms and nomenclatural changes in the ant genus Polyrhachis Fr. Smith (Hymenoptera: Formicidae: Formicinae). Mem. Qld. Mus. 42: 505-531 (page 519, Raised to species)
  • Kohout, R.J. 2013. A review of the Polyrhachis continua species-group of the subgenus Myrma Billberg (Hymenoptera: Formicidae: Formicinae) with keys and descriptions of new species. Australian Entomologist 40(1), 13-46.