Gnamptogenys bruchi

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Gnamptogenys bruchi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ectatomminae
Tribe: Ectatommini
Genus: Gnamptogenys
Species: G. bruchi
Binomial name
Gnamptogenys bruchi
(Santschi, 1922)

Gnamptogenys bruchi casent0173382 profile 1.jpg

Gnamptogenys bruchi casent0173382 dorsal 1.jpg

Specimen labels

Apparently a predator of Trachymyrmex and other leaf cutting ants (Kempf and Brown, 1968:92).


A member of the hartmoni complex (in the regularis subgroup of the mordax species group). Striate body sculpture with weak transverse impressions; metacoxal process is shaped as a low, triangular lobe; clypeal lamella broadly convex anterad. Kempf (1969) notes Gnamptogenys bruchi as close to Gnamptogenys hartmani and that a synonymy could be possible. He also mentions the variability of the extent of impression of the metanotal groove and discards it as an indicator of species separation. This could very well be only a variant of hartmani but due to differences of sculpture on the posterior petiole face, postpetiolar sternal process and c1ypeal lamella, I have chosen to conserve this name until more material can be studied. The sculpture on the dorsum of the petiole can vary from longitudinal to whorled. (Lattke 1995)

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: 2.81972° to -31.657°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality), Brazil, Paraguay.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.




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

  • bruchi. Ectatomma (Parectatomma) bruchi Santschi, 1922d: 241 (w.) ARGENTINA (Córdoba).
    • Type-material: syntype workers (number not stated).
    • Type-locality: Argentina: Córdoba, Alta Gracia (C. Bruch).
    • Type-depository: NHMB.
    • Combination in E. (Commateta): Santschi, 1929h: 476;
    • combination in Gnamptogenys: Brown, 1958g: 227; Camacho, Franco, Branstetter, et al. 2022: 11.
    • Status as species: Santschi, 1929h: 476; Brown, 1958g: 227; Kempf, 1969: 275; Kusnezov, 1969: 35 (in key); Kempf, 1972a: 112; Bolton, 1995b: 208; Lattke, 1995: 162; Wild, 2007b: 27; Lattke, et al. 2007: 262 (in key); Feitosa, 2015c: 98; Camacho, et al. 2020: 460 (in key); Camacho, Franco, Branstetter, et al. 2022: 11.
    • Distribution: Argentina, Brazil, Paraguay.



References based on Global Ant Biodiversity Informatics

  • Kempf W. W. 1969. Miscellaneous studies on Neotropical ants. V. (Hymenoptera, Formicidae). Studia Entomologica 12: 273-296.
  • Kempf W. W. 1978. A preliminary zoogeographical analysis of a regional ant fauna in Latin America. 114. Studia Entomologica 20: 43-62.
  • 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
  • Osorio Rosado J. L, M. G. de Goncalves, W. Drose, E. J. Ely e Silva, R. F. Kruger, and A. Enimar Loeck. 2013. Effect of climatic variables and vine crops on the epigeic ant fauna (Hymenoptera: Formicidae) in the Campanha region, state of Rio Grande do Sul, Brazil. J Insect Conserv 17: 1113-1123.
  • Wetterer J. K. 2014. Geographic distribution of Gnamptogenys hartmani (Hymenoptera, Formicidae), an agro-predator that attacks fungus-growing ants. Terrestrial Arthropod Reviews 7: 147–157.
  • Wild, A. L.. "A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)." Zootaxa 1622 (2007): 1-55.