Gnamptogenys concinna

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Gnamptogenys concinna
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ectatomminae
Tribe: Ectatommini
Genus: Gnamptogenys
Species: G. concinna
Binomial name
Gnamptogenys concinna
(Smith, F., 1858)

Gnamptogenys concinna P casent0179454.jpg

Gnamptogenys concinna D casent0179454.jpg

Specimen Label

Synonyms

Consistently collected and observed on trees, this species is an arboreal nester. Longino found a nest inside a large, deep knothole and records prey items of the following: Heteroptera: Pentatomidae, Aradidae; Coleoptera: Cerambycidae, Histeridae, Platypodidae, Chrysomelidae, Tenebrionidae, and Passalidae. One observed foraging group was made up of 9 workers and a dealate queen. Observations of group foraging of up to 40 single-file workers, plus the following Longino observation, indicate trail and/or recruiting pheromone communication in this species. “The foragers walked with their gasters curled and touching the substrate. When they were together near the prey I could often make out a tiny white area (gland?) exposed at the very tip of the gaster, which other workers would investigate”. (Lattke 1995)

Identification

A member of the concinna species group. A large finely striate species with transverse striae on propodeum, declivity medianly smooth; Promesonotal suture weakly impressed or absent; mesometanotal suture deep and wide; metacoxal tooth absent, low crest or tubercle at most. Color can vary from ferruginous to light-brown, and the striae on the posterior nodal face may be effaced. (Lattke 1995)

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Bolivia, Brazil (type locality), Colombia, Costa Rica, Ecuador, Mexico, Panama, Peru, Trinidad and Tobago, Venezuela.

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Biology

Castes

Nomenclature

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

  • concinna. Ectatomma concinna Smith, F. 1858b: 103 (q.) BRAZIL. Mayr, 1866b: 892 (w.). Combination in Gnamptogenys: Mayr, 1866b: 892; in Ectatomma (Gnamptogenys): Mayr, 1887: 541; in E. (Tammoteca): Santschi, 1929h: 476; in Gnamptogenys: Brown, 1958g: 227. Senior synonym of conica, romani, semicircularis: Brown, 1958g: 227. See also: Lattke, 1995: 162.
  • romani. Ectatomma (Gnamptogenys) concinnum var. romani Wheeler, W.M. 1923: 2 (w.) BRAZIL. Junior synonym of concinna: Brown, 1958g: 227.
  • conica. Gnamptogenys concinna var. conica Borgmeier, 1929: 196 (w.) BRAZIL. Junior synonym of concinna: Brown, 1958g: 227.
  • semicircularis. Gnamptogenys concinna var. semicircularis Borgmeier, 1929: 195 (w.) BRAZIL. Junior synonym of concinna: Brown, 1958g: 227.

The following notes on F. Smith type specimens have been provided by Barry Bolton (details):

Ectatomma concinna

Holotype queen in The Natural History Museum. Labelled “Braz. Santarem” on one side, and “52/96,” on the other. Acc. Reg.: “1852 no. 96 (Sept. 6) Purchased of Stevens. Collected by Mr Bates.”

Description

References

  • Brown, W. L., Jr. 1958g. Contributions toward a reclassification of the Formicidae. II. Tribe Ectatommini (Hymenoptera). Bull. Mus. Comp. Zool. 118: 173-362 (page 229, Junior synonym of teffensis; page 227, Combination in Gnamptogenys, and senior synonym of conica, romani and semicircularis)
  • Delabie, J.H.C., da Rocha, W.D., Feitosa, R.M., Devienne, P. & Fresneau, D. 2010. Gnamptogenys concinna (F. Smith, 1858): nouvelles données sur sa distribution et commentaires sur ce cas de gigantisme dans le genre Gnamptogenys (Hymenoptera, Formicidae, Ectatomminae). Bulletin de la Société entomologique de France 115, 269-277.
  • Lattke, J. E. 1995. Revision of the ant genus Gnamptogenys in the New World (Hymenoptera: Formicidae). J. Hym. Res. 4: 137-193 (page 162, see also)
  • Mayr, G. 1866b. Diagnosen neuer und wenig gekannter Formiciden. Verh. K-K. Zool.-Bot. Ges. Wien 16: 885-908 (page 892, Combination in Gnamptogenys)
  • Mayr, G. 1887. Südamerikanische Formiciden. Verh. K-K. Zool.-Bot. Ges. Wien 37: 511-632 (page 541, Combination in Ectatomma (Gnamptogenys))
  • Santschi, F. 1929h. Révision du genre Holcoponera Mayr. Zool. Anz. 82: 437-477 (page 476, Combination in E. (Tammoteca))
  • Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp. (page 103, queen described)