Acromyrmex ambiguus

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Acromyrmex ambiguus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Acromyrmex
Species: A. ambiguus
Binomial name
Acromyrmex ambiguus
(Emery, 1888)

Acromyrmex ambiguus casent0281786 p 1 high.jpg

Acromyrmex ambiguus casent0281786 d 1 high.jpg

Specimen Labels

Synonyms

Acromyrmex ambiguus is common in Rio Grande do Sul, Brazil. They harvest monocotyledonous leaves (Loeck and Grutzmacher 2001) and masticate their collected plant material into tiny pieces to create the substrate for growing their fungal gardens. A molecular study of co-occuring populations of this species and Acromyrmex heyeri showed both of these species are cultivating Leucoagaricus gongylophorus but that there are differences in the fungal strains used by the two ant species (Pereira et al. 2015).

Identification

Distribution

Distribution based on Regional Taxon Lists

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


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Association with Other Organisms

  • This species is a host for the diapriid wasp Gymnopria lucens (a parasite) in Brazil, Uruguay (Loiacono, 1987; Gonzalez et al., 2016).
  • This species is a host for the histerid beetle Euspilotus myrmecophilus (a myrmecophile) in Argentina, Brazil, Uruguay (Lackner, 2014; Lackner & Arriagada, 2020).

Castes

Nomenclature

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

  • ambiguus. Atta (Acromyrmex) lundi var. ambigua Emery, 1888c: 358 (w.) BRAZIL (Rio Grande do Sul).
    • Goni, et al. 1983: 365 (k.).
    • Combination in Acromyrmex: Bruch, 1914: 216.
    • Subspecies of lundii: Dalla Torre, 1893: 153; Forel, 1895b: 139.
    • Status as species: Emery, 1905c: 50; Emery, 1906c: 166; Bruch, 1914: 216; Gallardo, 1916d: 328; Emery, 1924d: 348; Santschi, 1925a: 383; Borgmeier, 1927c: 129; Kusnezov, 1956: 35 (in key); Gonçalves, 1961: 131; Kempf, 1972a: 11; Zolessi & Abenante, 1977: 80; Zolessi, et al. 1988: 4; Cherrett & Cherrett, 1989: 50; Brandão, 1991: 322; Bolton, 1995b: 54; Wild, 2007b: 30.
    • Senior synonym of erectus: Gonçalves, 1961: 131; Kempf, 1972a: 11; Bolton, 1995b: 54.
  • erectus. Acromyrmex ambiguus var. erectus Santschi, 1925a: 384, fig. 2 (w.) BRAZIL (São Paulo).
    • Subspecies of ambiguus: Borgmeier, 1927c: 129.
    • Junior synonym of ambiguus: Gonçalves, 1961: 131; Kempf, 1972a: 11; Bolton, 1995b: 55.

Description

Karyotype

  • 2n = 38, karyotype = 2M+6SM+16ST+14A (Uruguay) (Goñi et al., 1984).
  • 2n = 38, karyotype = 14M + 12SM + 8ST + 4A (Brazil) (de Castro et al., 2020).

References

References based on Global Ant Biodiversity Informatics

  • Bonetto A. A. 1959. Las hormigas "cortadoras" de la Provincia de Santa Fé (generos: Atta y Acromyrmex). Santa Fé, Argentina: Ministerio de Agricultura y Ganadería (Dirección General de Recurzos Naturales), 79 pp.
  • Brandao, C.R.F. 1991. Adendos ao catalogo abreviado das formigas da regiao neotropical (Hymenoptera: Formicidae). Rev. Bras. Entomol. 35: 319-412.
  • Bruch C. 1914. Catálogo sistemático de los formícidos argentinos. Revista del Museo de La Plata 19: 211-234.
  • Cuezzo, F. 1998. Formicidae. Chapter 42 in Morrone J.J., and S. Coscaron (dirs) Biodiversidad de artropodos argentinos: una perspectiva biotaxonomica Ediciones Sur, La Plata. Pages 452-462.
  • Culebra Mason S., C. Sgarbi, J. Chila Covachina, J. M. Pena, N. Dubrovsky Berensztein, C. Margaria, and M. Ricci. 2017. Acromyrmex Mayr (Hymenoptera: Formicidae: Myrmicinae): species distribution patterns in the province of Buenos Aires, Argentina. Rev. Mus. Argentino Cienc. Nat. 19(2) 185-199.
  • Diehl-Fleig E. 2014. Termites and Ants from Rio Grande do Sul, Brazil. Sociobiology (in Press).
  • Drose W., L. R. Podgaiski, C. Fagundes Dias, M. de Souza Mendonca. 2019. Local and regional drivers of ant communities in forest-grassland ecotones in South Brazil: A taxonomic and phylogenetic approach. Plos ONE 14(4): e0215310.
  • Farji Brener A. G., and A. Ruggiero. 1994. Leaf-cutting ants (Atta and Acromyrmex) inhabiting Argentina: patterns in species richness and geographical range sizes. Journal of Biogeography 21(4): 391-399.
  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Gonçalves C. R. 1961. O genero Acromyrmex no Brasil (Hym. Formicidae). Stud. Entomol. 4: 113-180.
  • 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).
  • Kusnezov N. 1956. Claves para la identificación de las hormigas de la fauna argentina. Idia 104-105: 1-56.
  • Kusnezov N. 1978. Hormigas argentinas: clave para su identificación. Miscelánea. Instituto Miguel Lillo 61:1-147 + 28 pl.
  • Lutinski J. A., B. C. Lopes, and A. B. B.de Morais. 2013. Diversidade de formigas urbanas (Hymenoptera: Formicidae) de dez cidades do sul do Brasil. Biota Neotrop. 13(3): 332-342.
  • Mayhe Nunes A. J., and E. Diehl-Fleig. 1994. Acromyrmex (Hymenoptera: Formicidae) distribution in Rio Grande do Sul, Brazil. Acta Biologica Leopoldensia 16(1): 115-118.
  • 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.
  • Pignalberi C. T. 1961. Contribución al conocimiento de los formícidos de la provincia de Santa Fé. Pp. 165-173 in: Comisión Investigación Científica; Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina) 1961. Actas y trabajos del primer Congreso Sudamericano de Zoología (La Plata, 12-24 octubre 1959). Tomo III. Buenos Aires: Librart, 276 pp.
  • Rodrigues, A., M. Bacci, Jr., U.G. Mueller, A. Ortiz and F.C. Pagnocca. 2008. Microfungal “Weeds” in the Leafcutter Ant Symbiosis. Microbial Ecology 56:604-614
  • Rosado J. L. O., M. G. de Gonçalves, W. Dröse, E. J. E. e Silva, R. F. Krüger, R. M. Feitosa, and A. E. Loeck. 2012. Epigeic ants (Hymenoptera: Formicidae) in vineyards and grassland areas in the Campanha region, state of Rio Grande do Sul, Brazil. Check List, Journal of species lists and distribution 8(6): 1184-1189.
  • Santos Rando J. S., and L. C. Forti. 2005. Occurrence of ants Acromyrmex Mayr, 1865 in some cities of Brasil. Maringá 27(2): 129-133.
  • Santschi F. 1925. Revision du genre Acromyrmex Mayr. Revue Suisse de Zoologie 31: 355-398.
  • Ulyssea M. A., C. E. Cereto, F. B. Rosumek, R. R. Silva, and B. C. Lopes. 2011. Updated list of ant species (Hymenoptera, Formicidae) recorded in Santa Catarina State, southern Brazil, with a discussion of research advances and priorities. Revista Brasileira de Entomologia 55(4): 603–611.
  • Vittar, F. 2008. Hormigas (Hymenoptera: Formicidae) de la Mesopotamia Argentina. INSUGEO Miscelania 17(2):447-466
  • Vittar, F., and F. Cuezzo. "Hormigas (Hymenoptera: Formicidae) de la provincia de Santa Fe, Argentina." Revista de la Sociedad Entomológica Argentina (versión On-line ISSN 1851-7471) 67, no. 1-2 (2008).
  • Wild, A. L. "A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)." Zootaxa 1622 (2007): 1-55.
  • Zolessi L. C. de, Y. P. Abenante, and M. E. de Philippi. 1988. Lista sistematica de las especies de Formicidos del Uruguay. Comun. Zool. Mus. Hist. Nat. Montev. 11: 1-9.
  • Zolessi L. C. de; Y. P. de Abenante, and M. E. Philippi. 1989. Catálogo sistemático de las especies de Formícidos del Uruguay (Hymenoptera: Formicidae). Montevideo: ORCYT Unesco, 40 + ix pp.
  • de Abreu J. M., and J. H. C. Delabie. 1986. Controle das formigas cortadeiras em plantios de cacau. Revista Theobroma 16(4): 199-211.
  • de Zolessi, L.C., Y.P. de Abenante and M.E. Phillipi. 1989. Catalago Systematico de las Especies de Formicidos del Uruguay (Hymenoptera: Formicidae). Oficina Regional de Ciencia y Technologia de la Unesco para America Latina y el Caribe- ORCYT. Montevideo, Uruguay