Rhytidoponera chalybaea

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Rhytidoponera chalybaea
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ectatomminae
Tribe: Ectatommini
Genus: Rhytidoponera
Species: R. chalybaea
Binomial name
Rhytidoponera chalybaea
Emery, 1901

Rhytidoponera chalybaea casent0172343 profile 1.jpg

Rhytidoponera chalybaea casent0172343 dorsal 1.jpg

Specimen labels

At a Glance • Polygynous  




Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality), New Zealand.
Indo-Australian Region: Solomon Islands.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Elevation Range

Occurrence at collecting sites during elevational surveys of rainforest in the Eungella region, Queensland, Australia (Burwell et al., 2020).
Species Elevation (m asl)
200 400 600 800 1000 1200
Rhytidoponera chalybaea 90-100 80-90
Shading indicates the bands of elevation where species was recorded.
Numbers are the percentage of total samples containing this species.


Life History Traits

  • Queen number: polygynous (Ward, 1983; Frumhoff & Ward, 1992)
  • Queen mating frequency: single (Ward, 1983; Frumhoff & Ward, 1992)




The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • chalybaea. Rhytidoponera impressa var. chalybaea Emery, 1901a: 51 (w.) AUSTRALIA (New South Wales).
    • Type-material: holotype worker.
    • Type-locality: Australia: New South Wales (Staudinger).
    • Type-depository: MSNG.
    • Wheeler, G.C. & Wheeler, J. 1971b: 1201 (l.); Imai, Crozier & Taylor, 1977: 347 (k.).
    • Combination in R. (Chalcoponera): Emery, 1911d: 39.
    • Subspecies of impressa: Emery, 1911d: 39.
    • Status as species: Brown, 1954g: 4; Brown, 1958g: 202; Ward, 1980: 478 (redescription); Taylor & Brown, 1985: 41; Taylor, 1987a: 67; Bolton, 1995b: 378; Don, 2007: 77; Sarnat, et al. 2013: 69.
    • Senior synonym of cyrus: Brown, 1954g: 4; Ward, 1980: 478; Taylor & Brown, 1985: 41; Taylor, 1987a: 68; Bolton, 1995b: 378.
    • Distribution: Australia.
  • cyrus. Ectatomma (Rhytidoponera) cyrus Forel, 1910b: 13 (w.q.) AUSTRALIA (New South Wales).
    • Type-material: syntype workers (number not stated), 1 syntype queen.
    • Type-locality: Australia: New South Wales, Ballina, 1897 (Froggatt).
    • Type-depositories: ANIC, MHNG.
    • Combination in Rhytidoponera (Chalcoponera): Emery, 1911d: 39.
    • Status as species: Emery, 1911d: 39; Emery, 1912a: 77 (in key); Forel, 1915b: 14.
    • Junior synonym of chalybaea: Brown, 1954g: 4; Ward, 1980: 478; Taylor & Brown, 1985: 41; Taylor, 1987a: 68; Bolton, 1995b: 379.

Type Material



  • n = 21, 2n = 42, karyotype = 6M + 36A (Australia) (Imai et al., 1977; Mariano et al., 2015).

Worker Morphology

  • Caste: monomorphic
  • Source: Ward, 1983


References based on Global Ant Biodiversity Informatics

  • Brown W. L., Jr. 1954. Systematic and other notes on some of the smaller species of the ant genus Rhytidoponera Mayr. Breviora 33: 1-11.
  • Emery C. 1901. Notes sur les sous-familles des Dorylines et Ponérines (Famille des Formicides). Annales de la Société Entomologique de Belgique 45: 32-54.
  • Forel A. 1915. Results of Dr. E. Mjöbergs Swedish Scientific Expeditions to Australia 1910-13. 2. Ameisen. Ark. Zool. 9(16): 1-119
  • Nakamura A., C. P. Catterall, A. P. N. House, R. L. Kitching, and C. J. Burwell. 2007. The use of ants and other soil and litter arthropods as bio-indicators of the impacts of rainforest clearing and subsequent land use. Journal of Insect Conservation 11: 177-186.
  • Taylor R. W. 1987. A checklist of the ants of Australia, New Caledonia and New Zealand (Hymenoptera: Formicidae). CSIRO (Commonwealth Scientific and Industrial Research Organization) Division of Entomology Report 41: 1-92.
  • Ward P. S. 1980. A systematic revision of the Rhytidoponera impressa group (Hymenoptera: Formicidae) in Australia and New Guinea. Aust. J. Zool. 28: 475-498.