AntWiki: The Ants --- Online
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Melophorini
Genus: Notostigma
Emery, 1920
Type species
Camponotus carazzii, now Notostigma carazzii
2 species
(Species Checklist, Species by Country)

Notostigma carazzii casent0102089 profile 1.jpg

Notostigma carazzii casent0102089 dorsal 1.jpg

Specimen Label

Species of Notostigma are among the largest ants found in Australia. They can be quite common where they occur, but because they forage singly and almost exclusively at night they are often overlooked. Nests are in soil, either with a moderatelly large mound or soil around the entrance (Notostigma foreli) or under stones or wood (Notostigma carazzii). Foraging activity has been reviewed by Taylor (1992).


Shattuck (1999) - The antennal sockets are separated from the rear margin of the clypeus by a gap greater than the smallest diameter of the scape. The mandibles have more than ten teeth. The simple eyes (ocelli) are present on the top of the head. They are large ants, over 10mm in total length, with elongate bodies nad long antennal scapes.

Species of Notostimgma can be separated from other formicinies by their large body size, long scapes, numerous mandibular teeth and the presence of a small opening above the hind legs (the metapleural gland opening). The are most commonly confused with larger species of Camponotus, but they differ as mentioned.

AntWeb icon 02.png See images of species within this genus

Keys including this Genus


Keys to Species in this Genus


Distribution and Richness based on AntMaps

Species by Region

Number of species within biogeographic regions, along with the total number of species for each region.

Afrotropical Region Australasian Region Indo-Australian Region Malagasy Region Nearctic Region Neotropical Region Oriental Region Palaearctic Region
Species 0 2 0 0 0 0 0 0
Total Species 2840 1735 3042 932 835 4378 1740 2862


Life History Traits

  • Mean colony size: ? (Greer et al., 2021)
  • Compound colony type: not parasitic (Greer et al., 2021)
  • Nest site: hypogaeic (Greer et al., 2021)
  • Diet class: ? (Greer et al., 2021)
  • Foraging stratum: subterranean/leaf litter (Greer et al., 2021)
  • Foraging behaviour: solitary (Greer et al., 2021)



Worker Morphology

Explore-icon.png Explore: Show all Worker Morphology data or Search these data. See also a list of all data tables or learn how data is managed.

• Antennal segment count: 12 • Antennal club: absent • Palp formula: 6,4 • Total dental count: 11-13 • Spur formula: 1 pectinate, 1 pectinate • Eyes: >100 ommatidia • Scrobes: absent • Pronotal Spines: absent • Mesonotal Spines: absent • Propodeal Spines: absent • Petiolar Spines: absent • Caste: dimorphic • Sting: absent • Metaplural Gland: present • Cocoon: present



Gesomyrmex  (7 species, 12 fossil species)


Oecophylla  (15 species, 16 fossil species)


Gigantiops  (1 species, 0 fossil species)


Santschiella  (1 species, 0 fossil species)


Myrmoteras  (41 species, 0 fossil species)


See Phylogeny of Formicinae for details.


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

  • NOTOSTIGMA [Formicinae: Notostigmatini]
    • Notostigma Emery, 1920b: 252. Type-species: Camponotus carazzii, by original designation.

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


Emery 1920.
Emery 1920.