Gnamptogenys regularis

J. Longino (pers. comm.) reports observing a short linear column of workers walk to an apparent nest entrance on the ground. He excavated it before any activity had begun and found a small colony of Pseudomyrmex boopis. The related Gnamptogenys horni has a dietary preference for ants and beetles (Lattke, 1990). One specimen was removed from the stomach of a Tamandua tetradactylus.

Identification
Declivitous propodeal face abruptly separated from dorsal face, superolaterally with small angulate lobes; metacoxal tooth apically rounded and not triangular; dark brown body, testaceous legs. Transverse costulation can be totally absent or occupy all of the anterior nodal face. Females tend to have the anterior nodal face to tally transversely costulate. (Lattke 1995)

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Honduras, Mexico, Panama, Paraguay, Peru, Suriname, Venezuela.

Nomenclature

 * . Gnamptogenys regularis Mayr, 1870b: 965 (w.q.) MEXICO (no state data).
 * Type-material: 1 syntype worker, 1 syntype queen.
 * Type-locality: Mexico: (no further data) (Norton).
 * Type-depository: NHMW.
 * Combination in Ectatomma (Gnamptogenys): Mayr, 1887: 541;
 * combination in Gnamptogenys: Mann, 1922: 3.
 * Status as species: Dalla Torre, 1893: 26; Emery, 1896g: 45 (in key); Forel, 1899c: 8; Emery, 1911d: 45; Forel, 1911e: 254; Donisthorpe, 1915d: 335; Mann, 1922: 3; Borgmeier, 1923: 61; Donisthorpe, 1927b: 385; Brown, 1958g: 229; Kempf, 1961b: 492; Kempf, 1972a: 114; Lattke, 1990b: 20; Bolton, 1995b: 210; Lattke, 1995: 181; Lattke, et al. 2004: 348; Wild, 2007b: 27; Lattke, et al. 2007: 260 (in key); Lattke, et al. 2008: 96; Bezděčková, et al. 2015: 111; Feitosa, 2015c: 98; Feitosa & Prada-Achiardi, 2019: 673; Camacho, et al. 2020: 458 (in key).
 * Senior synonym of fiebrigi: Brown, 1958g: 229, 319; Kempf, 1972a: 114; Bolton, 1995b: 210; Lattke, 1995: 181.
 * Senior synonym of splendidum: Brown, 1958g: 229, 319; Kempf, 1972a: 114; Bolton, 1995b: 210; Lattke, 1995: 181.
 * Distribution: Argentina, Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Venezuela.
 * fiebrigi. Ectatomma (Gnamptogenys) fiebrigi Forel, 1909a: 253 (w.) PARAGUAY.
 * Type-material: syntype workers (number not stated).
 * Type-locality: Paraguay: San Bernardino (Fiebrig).
 * Type-depository: MHNG.
 * Status as species: Emery, 1911d: 45.
 * Junior synonym of regularis: Brown, 1958g: 229, 319; Kempf, 1972a: 114; Bolton, 1995b: 209; Lattke, 1995: 181.
 * splendidum. Ectatomma (Gnamptogenys) rimulosum var. splendidum Pergande, 1896: 871 (w.) MEXICO (Nayarit).
 * Type-material: syntype workers (number not stated, “many specimens”).
 * Type-locality: Mexico: Tepic, x.-xi.1894 (Eisen & Vaslit).
 * Type-depositories: CASC, USNM.
 * Status as species: Forel, 1899c: 8.
 * Subspecies of regularis: Emery, 1911d: 45.
 * Junior synonym of regularis: Brown, 1958g: 229, 319; Kempf, 1972a: 114; Bolton, 1995b: 210; Lattke, 1995: 181.

References based on Global Ant Biodiversity Informatics

 * Adams B. J., S. A. Schnitzer, and S. P. Yanoviak. 2016. Trees as islands: canopy ant species richness increases with the size of liana-free trees in a Neotropical forest. Ecography doi: 10.1111/ecog.02608
 * Adams B. J., S. A. Schnitzer, and S. P. Yanoviak. 2019. Connectivity explains local ant community structure in a Neotropical forest canopy: a large-scale experimental approach. Ecology 100(6): e02673.
 * Bezdeckova K., P. Bedecka, and I. Machar. 2015. A checklist of the ants (Hymenoptera: Formicidae) of Peru. Zootaxa 4020 (1): 101–133.
 * Brown W. L., Jr. 1958. Contributions toward a reclassification of the Formicidae. II. Tribe Ectatommini (Hymenoptera). Bulletin of the Museum of Comparative Zoology 118: 173-362.
 * Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
 * Del Toro, I., M. Vazquez, W. Mackay, P. Rojas, and R. Zapata-Mata. "Hormigas (Hymenoptera: Formicidae) de Tabasco: explorando la diversidad de la mirmecofauna en las selvas tropicales de baja altitud." Dugesiana 16, no. 1 (2009): 1-14.
 * Del Toro, I., M. Vázquez, W.P. Mackay, P. Rojas and R. Zapata-Mata. Hormigas (Hymenoptera: Formicidae) de Tabasco: explorando la diversidad de la mirmecofauna en las selvas tropicales de baja altitud. Dugesiana 16(1):1-14.
 * Delabie J. H. C., and I. C. do Nascimento. 1998. As Formigas do municipio de Ilhéus (Insecta: Hymenoptera: Formicidae). Especiaria 1(2): 133-152.
 * Dias N. D. S., R. Zanetti, M. S. Santos, M. F. Gomes, V. Peñaflor, S. M. F. Broglio, and J. H. C. Delabie. 2012. The impact of coffee and pasture agriculture on predatory and omnivorous leaf-litter ants. Journal of Insect Science 13:29. Available online: http://www.insectscience.org/13.29
 * Dias N. S., R. Zanetti, M. S. Santos, J. Louzada, and J. H. C. Delabie. 2008. Interaction between forest fragments and adjacent coffee and pasture agroecosystems: responses of the ant communities (Hymenoptera, Formicidae). Iheringia, Sér. Zool., Porto Alegre, 98(1): 136-142.
 * Emery C. 1911. Hymenoptera. Fam. Formicidae. Subfam. Ponerinae. Genera Insectorum 118: 1-125.
 * Escalante Gutiérrez J. A. 1993. Especies de hormigas conocidas del Perú (Hymenoptera: Formicidae). Revista Peruana de Entomología 34:1-13.
 * Fernandes, P.R. XXXX. Los hormigas del suelo en Mexico: Diversidad, distribucion e importancia (Hymenoptera: Formicidae).
 * 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. 1909. Ameisen aus Guatemala usw., Paraguay und Argentinien (Hym.). Deutsche Entomologische Zeitschrift 1909: 239-269.
 * 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.
 * INBio Collection (via Gbif)
 * 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).
 * Lapolla, J.S., T. Suman, J. Soso-Calvo and T.R. Schultz. 2006. Leaf litter ant diversity in Guyana. Biodiversity and Conservation 16:491510
 * 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
 * Longino J. T., and R. K. Colwell. 2011. Density compensation, species composition, and richness of ants on a neotropical elevational gradient. Ecosphere 2(3): 16pp.
 * Pacheco R., H. L. Vasconcelos, S. Groc, G. P. Camacho, and T. L. M. Frizzo. 2013. The importance of remnants of natural vegetation for maintaining ant diversity in Brazilian agricultural landscapes. Biodivers. Conserv. DOI 10.1007/s10531-013-0463-y
 * Perez-Lachaud, G., J. M. Heraty, A. Carmichael, and J. P. Lachaud. 2006. Biology and behavior of Kapala (Hymenoptera: Eucharitidae) attacking Ectatomma, Gnamptogenys, and Pachycondyla (Formicidae: Ectatomminae and Ponerinae) in Chiapas, Mexico. Annals of the Entomological Society of America 99: 567-576.
 * Pérez-Lachaud, G., J.M. Heraty, A. Carmichael and J.-P. Lachaud. 2006. Biology and Behavior of Kapala (Hymenoptera: Eucharitidae) Attacking Ectatomma, Gnamptogenys, and Pachycondyla (Formicidae: Ectatomminae and Ponerinae) in Chiapas, Mexico. Annals of the Entomological Society of America. 99(3):567-576
 * Quiroz-Robledo, L.N. and J. Valenzuela-Gonzalez. 2007. Distribution of poneromorph ants (Hymenoptera: Formicidae) in the Mexican state of Morelos. Florida Entomologist 90(4):609-615
 * 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.
 * Silvestre R., C. R. F. Brandão, and R. R. Silva da 2003. Grupos funcionales de hormigas: el caso de los gremios del cerrado. Pp. 113-148 in: Fernández, F. (ed.) 2003. Introducción a las hormigas de la región Neotropical. Bogotá: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, xxvi + 424 pp.
 * Vasconcelos H. L., J. M. S. Vilhena, W. E. Magnusson, and A. L. K. M. Albernaz. 2006. Long-term effects of forest fragmentation on Amazonian ant communities. Journal of Biogeography 33: 1348-1356.
 * Vasconcelos, H.L., J.M.S. Vilhena, W.E. Magnusson and A.L.K.M. Albernaz. 2006. Long-term effects of forest fragmentation on Amazonian ant communities. Journal of Biogeography 33:1348-1356
 * Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133
 * Wild, A. L.. "A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)." Zootaxa 1622 (2007): 1-55.
 * da Silva de Oliveira A. B., and F. A. Schmidt. 2019. Ant assemblages of Brazil nut trees Bertholletia excelsa in forest and pasture habitats in the Southwestern Brazilian Amazon. Biodiversity and Conservation 28(2): 329-344.