Holcoponera strigata

A dweller of wet montane transandean forests, commonly taken in leaf litter samples.

Identification
A member of the strigata complex (in the strigata subgroup of the striatula species group). Roughly costate; anterior postpetiolar surface fairly flat and with 3-4 transverse costae; abundant long, subdecumbent and suberect hairs on body. Aside from aspects covered by Kempf & Brown (1968), other characters that vary are the size of the propodeal spiracle, costulation of the propodeal declivity and the shape of the node. (Lattke 1995)

Distribution based on Regional Taxon Lists
Neotropical Region: Belize, Colombia, Costa Rica, French Guiana, Guatemala, Guyana, Honduras, Mexico, Panama, Suriname.

Biology
Longino, Ants of Costa Rica - This is the most common Gnamptogenys species above 500m elevation in wet forest leaf litter. It occurs at lower elevations (e.g. La Selva) but is less common there. It is frequently encountered foraging on the ground at night, and is common in samples of sifted leaf litter (Winkler samples). It nests in and under dead wood on the ground, under stones, and in soil. It may be polygynous: I observed a nest in Monteverde with two dealate queens. Observations of prey items include lepidopteran larvae, isopods, diptera (adults and larvae), and beetle larvae.

Nest observation from Guanacaste Province, Cerro Cacao: I discovered a nest in the soil of a steep bank at the side of a trail. Many workers were out foraging, and several workers were observed dragging a dead Camponotus albicoxis to the nest. I excavated the nest; it extended no more than 10cm horizontally back into the bank. There were several irregular galleries and chambers. One major chamber contained the queen.

Nomenclature

 * . Polyrhachis strigata Norton, 1868c: 4 (w.) MEXICO (no state data, probably Veracruz).
 * Type-material: holotype worker.
 * Type-locality: Mexico: (no further data) (Sumichrast).
 * Type-depository: unknown (perhaps USNM).
 * [Ponera strigata Norton, 1861a: 61. Nomen nudum.]
 * [Misspelled as strigosum by Emery, 1896g: 44.]
 * Wheeler, G.C. & Wheeler, J. 1964b: 450 (l.).
 * Combination in Ectatomma (Holcoponera): Emery, 1892b: 167;
 * combination in Gnamptogenys: Brown, 1958g: 229;
 * combination in Holcoponera: Emery, 1911d: 41; Camacho, Franco, Branstetter, et al. 2022: 11.
 * Status as species: Dalla Torre, 1893: 26; Emery, 1896g: 44 (in key); Forel, 1899c: 7; Wheeler, W.M. 1908b: 159; Wheeler, W.M. 1909b: 228; Emery, 1911d: 41; Wheeler, W.M. 1911a: 21; Mann, 1922: 4; Santschi, 1929h: 458 (redescription); Brown, 1958g: 229, 329; Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187; Lattke, et al. 2004: 348; Lattke, et al. 2007: 259 (in key); Lattke, et al. 2008: 98; Branstetter & Sáenz, 2012: 255; Feitosa & Prada-Achiardi, 2019: 672; Camacho, et al. 2020: 456 (in key); Camacho, Franco, Branstetter, et al. 2022: 11.
 * Senior synonym of concentrica: Dalla Torre, 1893: 26; Emery, 1896g: 44 (in key); Forel, 1899c: 7; Emery, 1911d: 41; Santschi, 1929h: 458; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187; Camacho, Franco, Branstetter, et al. 2022: 11.
 * Senior synonym of foreli: Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187.
 * Senior synonym of satzgeri: Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187; Camacho, Franco, Branstetter, et al. 2022: 11.
 * Senior synonym of simplex: Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187; Camacho, Franco, Branstetter, et al. 2022: 11.
 * Senior synonym of spurium: Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187; Camacho, Franco, Branstetter, et al. 2022: 11.
 * Distribution: Belize, Colombia, Costa Rica, Ecuador, French Guiana, Guatemala, Guyana, Honduras, Jamaica, Mexico, Nicaragua, Panama, Suriname.
 * concentrica. Gnamptogenys concentrica Mayr, 1870b: 964 (w.) MEXICO (no state data).
 * Type-material: syntype workers (number not stated).
 * Type-locality: Mexico: (no further data) (Bilimek).
 * Type-depository: NHMW.
 * [Misspelled as coucentricum by André, 1893b: 152.]
 * Combination in Ectatomma (Holcoponera): Mayr, 1887: 540.
 * Status as species: Mayr, 1884: 33; André, 1893b: 152; Wheeler, W.M. 1905b: 120.
 * Junior synonym of strigata: Dalla Torre, 1893: 26; Emery, 1896g: 44 (in key); Forel, 1899c: 7; Emery, 1911d: 41; Santschi, 1929h: 458; Kempf, 1972a: 115; Bolton, 1995b: 208; Lattke, 1995: 187.
 * foreli. Holcoponera simplex st. foreli Santschi, 1929h: 460, fig. 34 (w.m.) COSTA RICA.
 * Type-material: syntype workers (number not stated), 1 syntype male.
 * Type-locality: Costa Rica: La Palma, 1600 m. (P. Biolley).
 * Type-depository: NHMB.
 * Junior synonym of simplex: Brown, 1956b: 490; Brown, 1958g: 300.
 * Junior synonym of strigata: Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187.
 * satzgeri. Ectatomma (Holcoponera) satzgeri Forel, 1908b: 39 (w.q.) COSTA RICA.
 * Type-material: syntype workers (number not stated), 1 syntype queen.
 * Type-locality: Costa Rica: La Palma (1600 m.) (P. Biolley).
 * Type-depositories: MHNG, NHMB.
 * Combination in Holcoponera: Emery, 1911d: 40.
 * Status as species: Emery, 1911d: 40.
 * Subspecies of simplex: Santschi, 1929h: 461 (redescription).
 * Junior synonym of simplex: Brown, 1956b: 490; Brown, 1958g: 300.
 * Junior synonym of strigata: Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187; Camacho, Franco, Branstetter, et al. 2022: 11.
 * simplex. Ectatomma (Holcoponera) simplex Emery, 1896g: 46, pl. 1, fig. 7 (w.q.) COSTA RICA.
 * Type-material: syntype workers, syntype queens (numbers not stated, “some”).
 * Type-locality: Costa Rica: Alajuela (A. Alfaro).
 * Type-depository: MSNG.
 * Combination in Holcoponera: Emery, 1911d: 40;
 * combination in Gnamptogenys: Brown, 1958g: 229.
 * Status as species: Forel, 1899c: 7; Emery, 1911d: 40; Luederwaldt, 1918: 34; Borgmeier, 1923: 55; Santschi, 1929h: 459 (redescription); Menozzi, 1931b: 261; Brown, 1956b: 490; Brown, 1958g: 229.
 * Junior synonym of strigata: Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 210; Lattke, 1995: 187; Camacho, Franco, Branstetter, et al. 2022: 11.
 * spurium. Ectatomma (Holcoponera) simplex subsp. spurium Forel, 1908b: 39 (w.) GUATEMALA.
 * Type-material: holotype worker.
 * Type-locality: Guatemala: (no further data).
 * Type-depository: MHNG.
 * Combination in Holcoponera: Emery, 1911d: 40.
 * Subspecies of simplex: Forel, 1909a: 242; Emery, 1911d: 40; Santschi, 1929h: 462 (redescription).
 * Junior synonym of simplex: Brown, 1956b: 490; Brown, 1958g: 300.
 * Junior synonym of strigata: Kempf & Brown, 1968: 90; Kempf, 1972a: 115; Bolton, 1995b: 211; Lattke, 1995: 187; Camacho, Franco, Branstetter, et al. 2022: 11.

References based on Global Ant Biodiversity Informatics

 * Ahuatzin D. A., E. J. Corro, A. Aguirre Jaimes, J. E. Valenzuela Gonzalez, R. Machado Feitosa, M. Cezar Ribeiro, J. Carlos Lopez Acosta, R. Coates, W. Dattilo. 2019. Forest cover drives leaf litter ant diversity in primary rainforest remnants within human-modified tropical landscapes. Biodiversity and Conservation 28(5): 1091-1107.
 * André E. 1893. Description de quatre espèces nouvelles de fourmis d'Amérique. Rev. Entomol. (Caen) 12: 148-152.
 * 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.
 * 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.
 * Brown W. L. Jr. 1956. Notes on the ant genus Holcoponera Mayr, with descriptions of two new species. Insectes Sociaux 3: 489-497.
 * Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
 * Emery C. 1896. Studi sulle formiche della fauna neotropica. XVII-XXV. Bullettino della Società Entomologica Italiana 28: 33-107.
 * Emery C. 1911. Hymenoptera. Fam. Formicidae. Subfam. Ponerinae. Genera Insectorum 118: 1-125.
 * Fernandes, P.R. XXXX. Los hormigas del suelo en Mexico: Diversidad, distribucion e importancia (Hymenoptera: Formicidae).
 * Fernández F., E. E. Palacio, W. P. Mackay, and E. S. MacKay. 1996. Introducción al estudio de las hormigas (Hymenoptera: Formicidae) de Colombia. Pp. 349-412 in: Andrade M. G., G. Amat García, and F. Fernández. (eds.) 1996. Insectos de Colombia. Estudios escogidos. Bogotá: Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 541 pp
 * 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. 1908. Fourmis de Costa-Rica récoltées par M. Paul Biolley. Bulletin de la Société Vaudoise des Sciences Naturelles 44: 35-72.
 * 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.
 * Horvitz, C.C. and A.J. Beattie. 1980. Ant Dispersal of Calathea (Marantaceae) Seeds by Carnivorous Ponerines (Formicidae) in a Tropical Rain Forest. American Journal of Botany 67(3):321-326.
 * INBio Collection (via Gbif)
 * Kempf W. W., and W. L. Jr. Brown. 1968. Report on some Neotropical ant studies. Papeis Avulsos de Zoologia (São Paulo) 22: 89-102.
 * 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., F. Fernández, E. E. Palacio. 2004. Una nueva especie de Gnamptogenys (Hymenoptera: Formicidae) y comentarios sobre las especies del género en Colombia y Ecuador. Iheringia. Série Zoologia 94: 341-349.
 * Longino J. T. 2013. Ants of Nicargua. Consulted on 18 Jan 2013. https://sites.google.com/site/longinollama/reports/ants-of-nicaragua
 * Longino J. T. L., and M. G. Branstetter. 2018. The truncated bell: an enigmatic but pervasive elevational diversity pattern in Middle American ants. Ecography 41: 1-12.
 * Longino J. T., J. Coddington, and R. K. Colwell. 2002. The ant fauna of a tropical rain forest: estimating species richness three different ways. Ecology 83: 689-702.
 * 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.
 * Longino J. et al. ADMAC project. Accessed on March 24th 2017 at https://sites.google.com/site/admacsite/
 * Longino, J.T. 2010. Personal Communication. Longino Collection Database
 * Luederwaldt H. 1918. Notas myrmecologicas. Rev. Mus. Paul. 10: 29-64.
 * Maes, J.-M. and W.P. MacKay. 1993. Catalogo de las hormigas (Hymenoptera: Formicidae) de Nicaragua. Revista Nicaraguense de Entomologia 23.
 * Philpott, S.M., P. Bichier, R. Rice, and R. Greenberg. 2007. Field testing ecological and economic benefits of coffee certification programs. Conservation Biology 21: 975-985.
 * 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
 * Radoszkowsky O. 1884. Fourmis de Cayenne Française. Trudy Russkago Entomologicheskago Obshchestva 18: 30-39.
 * Santschi F. 1929. Révision du genre Holcoponera Mayr. Zoologischer Anzeiger. 82: 437-477.
 * Smith M. A., W. Hallwachs, D. H. Janzen. 2014. Diversity and phylogenetic community structure of ants along a Costa Rican elevational gradient. Ecography 37(8): 720-731.
 * Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133
 * Wheeler W. M. 1905. The ants of the Bahamas, with a list of the known West Indian species. Bulletin of the American Museum of Natural History 21: 79-135.
 * Wheeler W. M. 1908. The ants of Jamaica. Bulletin of the American Museum of Natural History 24: 159-163.
 * Wheeler W. M. 1909. Ants collected by Prof. F. Silvestri in Mexico. Bollettino del Laboratorio di Zoologia Generale e Agraria della Reale Scuola Superiore d'Agricoltura. Portici 3: 228-238.
 * Wheeler, William Morton. 1911. Additions to the Ant-Fauna of Jamaica. Bulletin American Museum of Natural History. 30:21-29.