Formica gnava

Formica gnava
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Formicinae
Tribe:	Formicini
Genus:	Formica
Species:	F. gnava
Binomial name
Formica gnava Buckley, 1866 Specimen labels

This ant nests under stones and in the soil without mounds. It feeds from extrafloral nectaries of the cholla (Opuntia spp), and forages into cotton wood trees. These ants can be very aggressive when the nest is disturbed, spraying formic acid at the intruder. (Mackay and Mackay 2002)

Identification

Bicolored with a dull surface.

Keys including this Species

• Key to Nearctic Formica fusca group males
• Key to Nearctic Formica fusca group queens
• Key to Nearctic Formica fusca group workers
• Key to Polyergus Species
• Key to US Polyergus species

Distribution

Southerwestern United States and Chihuahua Mexico.

Distribution based on Regional Taxon Lists

Nearctic Region: United States (type locality).
Neotropical Region: Mexico.

Distribution based on AntMaps

Distribution based on AntWeb specimens

Check data from AntWeb

Habitat

In New Mexico (Mackay and Mackay 2002) - Semi-deserts and shady canyons up to oak forests and pinyon pine forests and rarely to fir forests.

Biology

This species is a host for the ant Polyergus topoffi (a slave maker).

Castes

Worker

• Images provided by Harvard University, Museum of Comparative Zoology
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Nomenclature

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

• gnava. Formica gnava Buckley, 1866: 156 (w.q.m.) U.S.A. Combination in F. (Serviformica): Emery, 1925b: 250. Subspecies of fusca: Wheeler, W.M. 1902f: 20; of rufibarbis: Wheeler, W.M. 1913f: 518; Creighton, 1950a: 539. Revived status as species: Francoeur, 1973: 238. Material of the nomen nudum subsericeoneorufibarbis (misspelled as subsericeorufibarbis by Emery, 1925b: 250) referred here by Wheeler, W.M. 1913f: 518.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Francoeur 1973. Figures 425-440.

References

• Mackay, W. P. and E. Mackay. 2002. The ants of New Mexico (Hymenoptera: Formicidae). Edwin Mellen Press, Lewiston, NY.
• Alatorre-Bracamontes, C.E., Vásquez-Bolaños, M. 2010. Lista comentada de las hormigas (Hymenoptera: Formicidae) del norte de México. Dugesiana 17(1): 9-36.
• Buckley, S. B. 1866. Descriptions of new species of North American Formicidae. Proc. Entomol. Soc. Phila. 6: 152-172 (page 156, worker, queen, male described)
• Creighton, W. S. 1950a. The ants of North America. Bull. Mus. Comp. Zool. 104: 1-585 (page 539, Variety/subspecies of rufibarbis)
• Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183: 1-302 (page 250, Combination in F. (Serviformica))
• Francoeur, A. 1973. Révision taxonomique des espèces néarctiques du groupe fusca, genre Formica (Formicidae, Hymenoptera). Mém. Soc. Entomol. Qué. 3: 1-316 (page 238, revived status as species)
• Wheeler, W. M. 1902g. A consideration of S. B. Buckley's "North American Formicidae.". Trans. Tex. Acad. Sci. 4: 17-31 (page 20, Variety/subspecies of fusca)
• Wheeler, W. M. 1913i. A revision of the ants of the genus Formica (Linné) Mayr. Bull. Mus. Comp. Zool. 53: 379-565 (page 518, Variety/subspecies of rufibarbis, Material of the nomen nudum subsericeoneorufibarbis referred here.(misspelled as subsericeorufibarbis by Emery, 1925b: 250))

References based on Global Ant Biodiversity Informatics

• Allred D. M. 1982. Ants of Utah. The Great Basin Naturalist 42: 415-511.
• Allred, D.M. 1982. The ants of Utah. Great Basin Naturalist 42:415-511.
• Andersen A. N. 1997. Functional Groups and Patterns of Organization in North American Ant Communities: A Comparison with Australia. Journal of Biogeography. 24: 433-460
• Cokendolpher J. C., and O. F. Francke. 1990. The ants (Hymenoptera, Formicidae) of western Texas. Part II. Subfamilies Ecitoninae, Ponerinae, Pseudomyrmecinae, Dolichoderinae, and Formicinae. Special Publications, the Museum. Texas Tech University 30:1-76.
• Cokendolpher J.C., Reddell J.R., Taylor S.J, Krejca J.K., Suarez A.V. and Pekins C.E. 2009. Further ants (Hymenoptera: Formicidae) from caves of Texas [Hormigas (Hymenoptera: Formicdae) adicionales de cuevas de Texas]. Texas Memorial Museum Speleological Monographs, 7. Studies on the cave and endogean fauna of North America, V. Pp. 151-168
• Cole A. C., Jr. 1937. An annotated list of the ants of Arizona (Hym.: Formicidae). [concl.]. Entomological News 48: 134-140.
• Cover S. P., and R. A. Johnson. 20011. Checklist of Arizona Ants. Downloaded on January 7th at http://www.asu.edu/clas/sirgtools/AZants-2011%20updatev2.pdf
• Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
• Des Lauriers J., and D. Ikeda. 2017. The ants (Hymenoptera: Formicidae) of the San Gabriel Mountains of Southern California, USA with an annotated list. In: Reynolds R. E. (Ed.) Desert Studies Symposium. California State University Desert Studies Consortium, 342 pp. Pages 264-277.
• Francoeur. A. 1973. Revision taxonomique des especes nearctiques du group fusca, genre Formica. Memoires de la Societe Entomologique du Quebec 3: 1-316.
• Gregg, R.T. 1963. The Ants of Colorado.
• Higgins J. W., N. S. Cobb, S. Sommer, R. J. Delph, and S. L. Brantley. 2014. Ground-dwelling arthropod responses to succession in a pinyon-juniper woodland. Ecosphere 5(1):5. http://dx.doi.org/10.1890/ES13-00270.1
• Johnson R. Personnal Database. Accessed on February 5th 2014 at http://www.asu.edu/clas/sirgtools/resources.htm
• Johnson, C.A., H. Topoff, R.K. Vander Meer and B. Lavine. 2005. Do These Eggs Smell Funny to You?: An Experimental Study of Egg Discrimination by Hosts of the Social Parasite Polyergus breviceps (Hymenoptera: Formicidae). Behavioral Ecology and Sociobiology 57(3):245-255.
• Johnson, R.A. and P.S. Ward. 2002. Biogeography and endemism of ants (Hymenoptera: Formicidae) in Baja California, Mexico: a first overview. Journal of Biogeography 29:1009–1026/
• Jusino-Atresino R., and S. A. Phillips, Jr. 1992. New ant records for Taylor Co., Texas. The Southern Naturalist 34(4): 430-433.
• La Rivers I. 1968. A first listing of the ants of Nevada. Biological Society of Nevada, Occasional Papers 17: 1-12.
• LaBrun, E.G. and D.H. Feener Jr. 2007. When trade-offs interact: balance of terror enforces dominance discovery trade-off in a local ant assemblage. Journal of Animal Ecology 76:58-64
• LeBrun, E.G. 2005. Who Is the Top Dog in Ant Communities? Resources, Parasitoids, and Multiple Competitive Hierarchies. Oecologia 142(4):643-652
• Longino, J.T. 2010. Personal Communication. Longino Collection Database
• MacGown J. A., T. L. Schiefer, and M. G. Branstetter. 2015. First record of the genus Leptanilloides (Hymenoptera: Formicidae: Dorylinae) from the United States. Zootaxa 4006 (2): 392–400.
• Mackay W. P., and E. E. Mackay. 2002. The ants of New Mexico (Hymenoptera: Formicidae). Lewiston, New York: Edwin Mellen Press, 400 pp.
• Mackay, W.P. and E. Mackay. XXXX. The Ants of New Mexico
• Mallis A. 1941. A list of the ants of California with notes on their habits and distribution. Bulletin of the Southern California Academy of Sciences 40: 61-100. 
• McDonald D. L., D. R. Hoffpauir, and J. L. Cook. 2016. Survey yields seven new Texas county records and documents further spread of Red Imported Fire Ant, Solenopsis invicta Buren. Southwestern Entomologist, 41(4): 913-920.
• O'Keefe S. T., J. L. Cook, T. Dudek, D. F. Wunneburger, M. D. Guzman, R. N. Coulson, and S. B. Vinson. 2000. The Distribution of Texas Ants. The Southwestern Entomologist 22: 1-92.
• Smith M. R. 1936. A list of the ants of Texas. Journal of the New York Entomological Society 44: 155-170.
• Varela-Hernandez, F., M. Rocha-Ortega, R. W. Jones, and W. P. Mackay. 2016. Insectos: Hormigas (Formicidae) del estado de Queretaro, Mexico. Pages 397-404 in W. Jones., and V. Serrano-Cardenas, editors. Historia Natural de Queretaro. Universidad Autonoma de Queretaro, Mexico.
• Vasquez-Bolanos M. 2011. Checklist of the ants (Hymenoptera: Formicidae) from Mexico. Dugesiana 18(1): 95-133.
• Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133
• Wheeler W. M. 1906. The ants of the Grand Cañon. Bulletin of the American Museum of Natural History 22: 329-345.
• Wheeler W. M. 1913. A revision of the ants of the genus Formica (Linné) Mayr. Bulletin of the Museum of Comparative Zoology 53: 379-565.
• Wheeler W. M. 1917. The mountain ants of western North America. Proceedings of the American Academy of Arts and Sciences 52: 457-569.
• Wheeler, G.C. and J. Wheeler. 1985. A checklist of Texas ants. Prairie Naturalist 17:49-64.