Gnamptogenys tortuolosa

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

Identification
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)

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Venezuela.

Nomenclature

 * . Ponera tortuolosa Smith, F. 1858b: 99 (w.) BRAZIL (no state data).
 * Type-material: holotype worker.
 * Type-locality: Brazil: (no further data) (Swainson).
 * Type-depository: BMNH.
 * Wheeler, G.C. & Wheeler, J. 1952a: 134 (l.).
 * Combination in Ectatomma: Emery, 1887b: 438 (footnote);
 * combination in Ectatomma (Gnamptogenys): Dalla Torre, 1893: 26; Emery, 1896g: 51;
 * combination in Gnamptogenys: Mayr, 1886c: 358; Brown, 1958g: 230.
 * Status as species: Mayr, 1863: 450; Mayr, 1886c: 358; Dalla Torre, 1893: 26; Forel, 1895b: 113; Emery, 1896g: 51; Emery, 1911d: 45; Mann, 1916: 406 (redescription); Wheeler, W.M. 1916c: 2; Borgmeier, 1923: 62; Menozzi, 1935b: 190; Brown, 1958g: 230; Kempf, 1961b: 492; Kempf, 1970b: 325; Kempf, 1972a: 116; Lattke, 1990b: 22; Brandão, 1991: 346; Bolton, 1995b: 211; Lattke, 1995: 189; Lattke, et al. 2004: 349; Lattke, et al. 2007: 261 (in key); Lattke, et al. 2008: 99; Bezděčková, et al. 2015: 111; Feitosa, 2015c: 98; Feitosa & Prada-Achiardi, 2019: 673; Camacho, et al. 2020: 459 (in key).
 * Senior synonym of quitensis: Brown, 1958g: 230, 324; Kempf, 1972a: 116; Bolton, 1995b: 211; Lattke, 1995: 189.
 * Distribution: Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Venezuela.
 * quitensis. Gnamptogenys tortuolosa var. quitensis Forel, 1921b: 133 (w.) ECUADOR.
 * Type-material: holotype worker.
 * Type-locality: Ecuador: nr Quito (E. Naumann).
 * Type-depository: MHNG.
 * Junior synonym of tortuolosa: Brown, 1958g: 230, 324; Kempf, 1972a: 116; Bolton, 1995b: 210; Lattke, 1995: 189.

References based on Global Ant Biodiversity Informatics

 * Arias-Penna T. M. 2008. Subfamilia Ectatomminae. Pp. 53-107 in: Jiménez, E.; Fernández, F.; Arias, T.M.; Lozano-Zambrano, F. H. (eds.) 2008. Sistemática, biogeografía y conservación de las hormigas cazadoras de Colombia. Bogotá: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, xiv + 609 pp.
 * Bezdeckova K., P. Bedecka, and I. Machar. 2015. A checklist of the ants (Hymenoptera: Formicidae) of Peru. Zootaxa 4020 (1): 101–133.
 * Borgmeier T. 1923. Catalogo systematico e synonymico das formigas do Brasil. 1 parte. Subfam. Dorylinae, Cerapachyinae, Ponerinae, Dolichoderinae. Archivos do Museu Nacional (Rio de Janeiro) 24: 33-103.
 * Brandao, C.R.F. 1991. Adendos ao catalogo abreviado das formigas da regiao neotropical (Hymenoptera: Formicidae). Rev. Bras. Entomol. 35: 319-412.
 * Brown W. L., Jr. 1958. Contributions toward a reclassification of the Formicidae. II. Tribe Ectatommini (Hymenoptera). Bull. Mus. Comp. Zool. 118: 173-362.
 * Delabie J. H. C., R. Céréghino, S. Groc, A. Dejean, M. Gibernau, B. Corbara, and A. Dejean. 2009. Ants as biological indicators of Wayana Amerindian land use in French Guiana. Comptes Rendus Biologies 332(7): 673-684.
 * Fernandes I., and J. de Souza. 2018. Dataset of long-term monitoring of ground-dwelling ants (Hymenoptera: Formicidae) in the influence areas of a hydroelectric power plant on the Madeira River in the Amazon Basin. Biodiversity Data Journal 6: e24375.
 * Fernández F., and E. E. Palacio. 1995. Hormigas de Colombia IV: nuevos registros de géneros y especies. Caldasia 17: 587-596.
 * Fernández F., and T. M. Arias-Penna. 2008. Las hormigas cazadoras en la región Neotropical. Pp. 3-39 in: Jiménez, E.; Fernández, F.; Arias, T.M.; Lozano-Zambrano, F. H. (eds.) 2008. Sistemática, biogeografía y conservación de las hormigas cazadoras de Colombia. Bogotá: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, xiv + 609 pp.
 * Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
 * Forel A. 1921. Quelques fourmis des environs de Quito (Ecuador) récoltées par Mlle Eléonore Naumann. Bulletin de la Société Vaudoise des Sciences Naturelles 54: 131-135.
 * Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
 * Groc S., J. H. C. Delabie, F. Fernandez, F. Petitclerc, B. Corbara, M. Leponce, R. Cereghino, and A. Dejean. 2017. Litter-dwelling ants as bioindicators to gauge the sustainability of small arboreal monocultures embedded in the Amazonian rainforest. Ecological Indicators 82: 43-49.
 * Groc S., J. H. C. Delabie, F. Fernandez, M. Leponce, J. Orivel, R. Silvestre, Heraldo L. Vasconcelos, and A. Dejean. 2013. Leaf-litter ant communities (Hymenoptera: Formicidae) in a pristine Guianese rainforest: stable functional structure versus high species turnover. Myrmecological News 19: 43-51.
 * Kempf W. W. 1961. A survey of the ants of the soil fauna in Surinam (Hymenoptera: Formicidae). Studia Entomologica 4: 481-524.
 * Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
 * Lattke J. E. 1995. Revision of the ant genus Gnamptogenys in the New World (Hymenoptera: Formicidae). Journal of Hymenoptera Research 4: 137-193
 * Lattke, J. E. 1990b. Revisión del género Gnamptogenys Roger en Venezuela (Hymenoptera: Formicidae). Acta Terramaris 2: 1-47
 * Menozzi C. 1935. Spedizione del Prof. Nello Beccari nella Guiana Britannica. Hymenoptera-Formicidae. Redia. 21: 189-203.
 * Salazar F., and D. A. Donoso. 2013. New ant (Hymenoptera: Formicidae) records for Ecuador deposited at the Carl Rettenmeyer ant collection in the QCAZ Museum. Boletín Tecnico 11, Serie Zoológica 8-9: 151  177.
 * Wheeler W. M. 1916. Ants collected in British Guiana by the expedition of the American Museum of Natural History during 1911. Bulletin of the American Museum of Natural History 35: 1-14.