Polyrhachis continua

AntWiki - Where Ant Biologists Share Their Knowledge
Jump to: navigation, search
Polyrhachis continua
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Polyrhachis
Subgenus: Myrma
Species: P. continua
Binomial name
Polyrhachis continua
Emery, 1887

Polyrhachis continua casent0905820 p 1 high.jpg

Polyrhachis continua casent0905820 d 1 high.jpg

Type Labels

Synonyms

Specimens have been collected from an ephiphyte root mass in lowland rainforest.

Identification

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

Kohout (2008) - Like other members of the species-group, P. continua has an evenly curved mesosomal dorsum that lacks a distinct border between the propodeal dorsum and declivity, and has postocular and lateral ridges on the head (Kohout, 1989; 1998).

Keys including this Species

Distribution

Polyrhachis continua is known from the Moluccas (Ternate I.), New Guinea (Paumomu R.) and Sulawesi. (Kohout 2008)

Distribution based on Regional Taxon Lists

Indo-Australian Region: Indonesia (type locality), New Guinea, Sulawesi.

Check distribution from AntMaps.

Distribution based on specimens

Loading map...

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

Biology

Castes

Worker

Queen

Male

Nomenclature

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

  • continua. Polyrhachis continua Emery, 1887a: 235, pl. 4, fig. 21 (w.) INDONESIA (Ternate I.). Combination in P. (Myrma): Emery, 1925b: 200. Senior synonym of revocata: Kohout, 1998: 519.
  • revocata. Polyrhachis continua var. revocata Viehmeyer, 1913: 151 (w.) INDONESIA (Sulawesi) (in copal). Combination in P. (Myrma): Emery, 1925b: 200. Junior synonym of continua: 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 (holotype cited first): TL c. 10.18, 9.42-10.68; HL 2.50, 2.31-2.59; HW 1.81, 1.65-1.87; CI 72, 70-74; SL 3.48, 3.12-3.48; SI 192, 181-192; PW 1.53, 1.53-1.87; MTL 3.68, 3.22-3.68 (1+10 measured).

Queen

Kohout (2013) - Dimensions: TL c. 11.04-11.29; HL 2.62-2.68; HW 2.09-2.12; CI 79-80; SL 3.38-3.43; SI 162; PW 2.37-2.40; MTL 3.33-3.48 (2 measured).

Queen larger than worker with usual characters identifying full sexuality, including three ocelli, complete thoracic structure and wings. Pronotal spines distinctly shorter, only about 2x as long as basal width. Mesoscutum wider than long; lateral margins converging anteriorly into narrowly rounded anterior margin; median line distinct; parapsides virtually flat anteriorly, weakly raised posteriorly; mesoscutum in profile with relatively low anterior face rounding onto weakly convex dorsum. Mesoscutellum only weakly convex, not elevated above dorsal plane of mesosoma. Propodeum with lateral margins terminating in medially directed, short ridges; propodeal dorsum descending into steeply descending declivity in medially uninterrupted line. Petiole with dorsal spines distinctly shorter, inner margins forming ‘U’-shaped dorsum of segment. Sculpturation, pilosity, pubescence and colour scheme very similar to worker.

Type Material

Kohout (2013):

Holotype worker. Indonesia, Ternate I., Aqui Conora (O. Beccari), Museo Civico di Storia Naturale, Genoa (examined).

Polyrhachis continua var. revocata Viehmeyer, 1913: 151. Syntype workers. Indonesia, Sulawesi (in copal), Berlin Museum für Naturkunde der Humboldt-Universität (examined).

References

  • Emery, C. 1887a [1886]. Catalogo delle formiche esistenti nelle collezioni del Museo Civico di Genova. Parte terza. Formiche della regione Indo-Malese e dell'Australia. [part]. Ann. Mus. Civ. Stor. Nat. 24[=(2)(4): 209-240 (page 235, pl. 4, fig. 21 worker 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, Senior synonym of revocata)
  • Kohout, R.J. 2008a. A review of the Polyrhachis ants of Sulawesi with keys and descriptions of new species (Hymenoptera: Formicidae: Formicinae). Memoirs of the Queensland Museum. 52:255-317. PDF
  • 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.