Diacamma australe

AntWiki: The Ants --- Online
Diacamma australe
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Ponerini
Genus: Diacamma
Species: D. australe
Binomial name
Diacamma australe
(Fabricius, 1775)

Diacamma australe casent0172071 profile 1.jpg

Diacamma australe casent0172071 dorsal 1.jpg

Specimen labels

Diacamma australe is found along the northern Queensland coast and is sympatric with Diacamma schoedli in the northern part of its range.

At a Glance • Gamergate  


Dorsal surfaces of pronotum and head with distinct rugae. Petiolar spines relatively widely spaced, anterior face of node shorter than dorsal face and separated from it by a distinct angle.

This species can be separated from Diacamma colosseense and Diacamma schoedli by the presence of a block-like petiolar node and distinct sculpturing on the first gastral tergite. Note that this tergite is sculptured in all of these species. However, in this species the sculpturing is stronger and covers the posterior two-thirds of the segment, while in the others the sculpturing is weaker and limited to the anterior half.

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: 19.26666667° to -27.92304°.

Tropical South

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.



Images from AntWeb

Diacamma australe casent0172072 head 1.jpgDiacamma australe casent0172072 profile 1.jpgDiacamma australe casent0172072 profile 2.jpgDiacamma australe casent0172072 dorsal 1.jpgDiacamma australe casent0172072 dorsal 2.jpgDiacamma australe casent0172072 label 1.jpg
Male (alate). Specimen code casent0172072. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by ANIC, Canberra, Australia.
Diacamma australe casent0172073 head 1.jpgDiacamma australe casent0172073 profile 1.jpgDiacamma australe casent0172073 dorsal 1.jpgDiacamma australe casent0172073 label 1.jpg
Queen (ergatoid). Specimen code casent0172073. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by ANIC, Canberra, Australia.


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

  • australe. Formica australis Fabricius, 1775: 393 (w.) AUSTRALIA. Forel, 1915b: 26 (m.); Wheeler, G.C. & Wheeler, J. 1952c: 609 (l.). Combination in Diacamma: Mayr, 1862: 718. See also: Shattuck & Barnett, 2006: 14.

Type Material


Measurements (n = 12): HL 2.55 - 2.88 mm, HW 2.06 - 2.35 mm, CI 77 - 84, SL 2.87 - 3.27 mm, SI 133 - 148, ML 3.67 - 4.12 mm, MTL 2.34 - 2.65 mm, PH 1.26 - 1.59 mm, PL 0.95 - 1.14 mm, PI 66 - 79.


References based on Global Ant Biodiversity Informatics

  • Emery, C.. "Catalogo delle formiche esistenti nelle collezioni del Museo Civico di Genova. Parte terza. Formiche della regione Indo-Malese e dell'Australia (continuazione e fine)." Annali del Museo Civico di Storia Naturale Giacomo Doria (Genova) (2) 5, no. 25 (1887): 427-473.
  • Forel A. 1915. Results of Dr. E. Mjöbergs Swedish Scientific Expeditions to Australia 1910-13. 2. Ameisen. Ark. Zool. 9(16): 1-119
  • Shattuck S. O., and N. J. Barnett. 2006. Australian species of the ant genus Diacamma (Hymenoptera: Formicidae). Myrmecologische Nachrichten 8: 13-19.
  • Viehmeyer H. 1914. Papuanische Ameisen. Deutsche Entomologische Zeitschrift 1914: 515-535.