Gnamptogenys tortuolosa

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

Gnamptogenys tortuolosa P casent0217489.jpg

Gnamptogenys tortuolosa D casent0217489.jpg

Specimen Label


Found nesting in rotten wood in humid forests and foraging in grassy or weedy areas.


A member of the sulcata complex (in the sulcata subgroup of the sulcata species group). Mandibles subtriangular; clypeal lamella laterally angular and medianly straight to softly concave; propodeum with transverse costulae; coxal tooth small sometimes shaped as a short lobe; tibiae, femora and scapes smooth and shining. Piceous body; legs and antennae ferruginous. (Lattke 1995)

Keys including this Species


Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (type locality), Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Venezuela.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Not much is known about the the biology of Gnamptogenys tortuolosa. We can speculate that the biology of this species is similar to other species of the genus. Gnamptogenys are predatory ponerine ants that inhabit tropical and subtropical mesic forests. Nesting is typically at ground level in rotten wood or leaf litter. Some exceptions include species that are arboreal, a dry forest species and species that nests in sandy savannahs. Colony size tends to be, at most, in the hundreds. Queens are the reproductives in most species. Worker reproduction is known from a few species in Southeastern Asia. Generalist predation is the primary foraging/dietary strategy. Specialization on specific groups (millipedes, beetles, other ants) has developed in a few species.



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

  • tortuolosa. Ponera tortuolosa Smith, F. 1858b: 99 (w.) BRAZIL. Wheeler, G.C. & Wheeler, J. 1952a: 134 (l.). Combination in Ectatomma (Gnamptogenys): Dalla Torre, 1893: 26; Emery, 1896g: 51; in Gnamptogenys: Mayr, 1886c: 358; Brown, 1958g: 230. Senior synonym of quitensis: Brown, 1958g: 230. See also: Lattke, 1995: 189.
  • quitensis. Gnamptogenys tortuolosa var. quitensis Forel, 1921b: 133 (w.) ECUADOR. Junior synonym of tortuolosa: Brown, 1958g: 230.



  • Brown, W. L., Jr. 1958g. Contributions toward a reclassification of the Formicidae. II. Tribe Ectatommini (Hymenoptera). Bull. Mus. Comp. Zool. 118: 173-362 (page 230, Combination in Gnamptogenys, Senior synonym of guitensis)
  • Dalla Torre, K. W. von. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. (page 26, Combination in Ectatomma (Gnamptogenys))
  • Emery, C. 1896g. Studi sulle formiche della fauna neotropica. XVII-XXV. Bull. Soc. Entomol. Ital. 28: 33-107 (page 51, Combination in Ectatomma (Gnamptogenys))
  • Mayr, G. 1886c. Notizen über die Formiciden-Sammlung des British Museum in London. Verh. K-K. Zool.-Bot. Ges. Wien 36: 353-368 (page 358, Combination in Gnamptogenys)
  • Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp. (page 99, worker described)
  • Wheeler, G. C.; Wheeler, J. 1952a. The ant larvae of the subfamily Ponerinae - Part I. Am. Midl. Nat. 48: 111-144 (page 134, larva described)