Notoncus ectatommoides

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Notoncus ectatommoides
Notoncus ectatommoides
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Melophorini
Genus: Notoncus
Species: N. ectatommoides
Binomial name
Notoncus ectatommoides
(Forel, 1892)

Notoncus ectatommoides side view

Notoncus ectatommoides top view

Specimen labels

Synonyms

Clark (1934) reported finding a small nest under a log.

Identification

Scutellum in the form of a slender, erect process, the apex of which may be in the form of a chisel point, an emarginate chisel point, a Y, a thick, pointed tooth, or some intermediate shape.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

W. L. Brown (1955) described a mating flight of this species: In a cropped lawn at Montville, Queensland numerous small holes appeared, each opened by workers and accompanied by a minute pile of dark earthen particles. From these holes, males began to issue almost immediately in numbers, until within a few minutes there had accumulated on the surface a surprisingly large number of this sex and also a few workers. The males traveled aimlessly over the sward in low, flitting flight from one blade of grass to another, never rising more than a foot or so from the ground. Movement seemed to take place at random in all directions. Suddenly, however, the males of one area all rushed simultaneously to a single focal point, which proved to be a winged female emerging from a small hole. In a few seconds, the female was surrounded by a dense swarm of males in the form of a ball, which at times must have exceeded 2 cm in diameter. This ball moved in a half-tumbling, half-dragging motion over and among the densely packed grass blades, and held together for perhaps 20 seconds, after which the female escaped, flying straight upward. She appeared not to be encumbered by a male, and no males were seen to follow her for more than a foot above the ground; she flew steadily, and soon passed out of sight.

Meanwhile, the lawn had become dotted with similar balls of frenzied males, each surrounding a female in a fashion similar to the first. Obviously, many more males than females were involved in this particular flight. On each occasion, the female left the ball after 20-30 seconds and flew straight upward.

Castes

Nomenclature

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

  • ectatommoides. Camponotus ectatommoides Forel, 1892c: 333 (q.) AUSTRALIA. Emery, 1895g: 353 (w.); Wheeler, G.C. & Wheeler, J. 1968: 206 (l.); Imai, Crozier & Taylor, 1977: 346 (k.). Combination in Notoncus: Emery, 1895g: 353. Senior synonym of acuminata, dentata, foreli, rodwayi, subdentata: Brown, 1955d: 485.
  • foreli. Notoncus foreli André, 1896b: 256 (w.) AUSTRALIA. Forel, 1915b: 90 (q.); Wheeler, G.C. & Wheeler, J. 1968: 208 (l.). Junior synonym of ectatommoides: Brown, 1955d: 485.
  • dentata. Notoncus foreli var. dentata Forel, 1910b: 68 (w.) AUSTRALIA. Junior synonym of ectatommoides: Brown, 1955d: 486.
  • subdentata. Notoncus foreli var. subdentata Forel, 1910b: 68 (w.) AUSTRALIA. Viehmeyer, 1925a: 37 (q.m.). Junior synonym of ectatommoides: Brown, 1955d: 486.
  • acuminata. Notoncus foreli var. acuminata Viehmeyer, 1925a: 37 (w.) AUSTRALIA. Junior synonym of ectatommoides: Brown, 1955d: 486.
  • rodwayi. Notoncus rodwayi Donisthorpe, 1941j: 206 (q.) AUSTRALIA. Junior synonym of ectatommoides: Brown, 1955d: 486.

Type Material

Description

Karyotype

  • n = 22, 2n = 44 (Australia) (Imai et al., 1977).

References

  • André, E. 1896d. Fourmis nouvelles d'Asie et d'Australie. Rev. Entomol. (Caen) 15: 251-265 PDF
  • Brown, W. L., Jr. 1955. A revision of the Australian ant genus Notoncus Emery, with notes on the other genera of Melophorini. Bull. Mus. Comp. Zool. 113: 471-494 (page 485, Senior synonym of acuminata, dentata, foreli, rodwayi and subdentata)
  • Clark, J. 1934c. Ants from the Otway Ranges. Mem. Natl. Mus. Vic. 8:48-73.
  • Emery, C. 1895h. Descriptions de quelques fourmis nouvelles d'Australie. Ann. Soc. Entomol. Belg. 39: 345-358 (page 353, worker described, Combination in Notoncus)
  • Forel, A. 1892c. Die Ameisen Neu-Seelands. Mitt. Schweiz. Entomol. Ges. 8: 331-343 (page 333, queen described)
  • Imai, H. T.; Crozier, R. H.; Taylor, R. W. 1977. Karyotype evolution in Australian ants. Chromosoma (Berl.) 59: 341-393 (page 346, karyotype described)
  • Wheeler, G. C.; Wheeler, J. 1968a. The ant larvae of the subfamily Formicinae (Hymenoptera: Formicidae): supplement. Ann. Entomol. Soc. Am. 61: 205-222 (page 206, larva described)