Formica bradleyi

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Formica bradleyi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Formicini
Genus: Formica
Species: F. bradleyi
Binomial name
Formica bradleyi
Wheeler, W.M., 1913

Formica bradleyi casent0104877 profile 1.jpg

Formica bradleyi casent0104877 dorsal 1.jpg

Specimen labels


This widely distributed species is a sand specialist, being found almost exclusively in deep sand deposits.


The only member of the neogagates group that is concolorous yellowish red. The entire ant, including the appendages, is covered with bristly, white hairs, except for the scape, which is without erect hairs. The surfaces are shiny and the anterior border of the clypeus is concave, nearly notched. The male is unusual as it has a shiny head and mesosoma.


Canada: Alberta, Manitoba. United States: Minnesota, Iowa, Montana, North Dakota, Nebraska, Wyoming and Colorado.

Latitudinal Distribution Pattern

Latitudinal Range: 50.874° to 34.156971°.

Tropical South

Distribution based on Regional Taxon Lists

Nearctic Region: Canada, United States (type locality).

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.


Found only in very sandy soils at base of grass clumps (DuBois and Danoff-Burg, 1994).


  • This species is a host for the ant Formica puberula (a slave maker) (Mackay & Mackay, 2002).
  • This species is a host for the ant Formica rubicunda (a slave maker) (doubtful, slave maker possibly Formica pergandei).
  • This species is a host for the ant Formica wheeleri (a slave maker).

Association with Other Organisms

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  • This species is a mutualist for the aphid Rhopalosiphum nymphaeae (a trophobiont) (Jones, 1927; Saddiqui et al., 2019).



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

  • bradleyi. Formica bradleyi Wheeler, W.M. 1913f: 423 (w.m.) U.S.A. Wheeler, W.M. 1917a: 535 (q.); Wheeler, G.C. & Wheeler, J. 1953c: 168 (l.). Combination in F. (Raptiformica): Emery, 1925b: 259. Senior synonym of morbida: Wilson & Brown, 1955: 126. See also: Smith, D.R. 1979: 1449.
  • morbida. Formica (Proformica) neogagates var. morbida Wheeler, W.M. 1913f: 400 (in key) (w.q.) U.S.A. [Formica (Proformica) neogagates subsp. neogagates var. morbida Wheeler, W.M. 1913f: 538; unavailable name.] Subspecies of neogagates: Buren, 1944a: 309. Junior synonym of neogagates: Creighton, 1950a: 459; of bradleyi: Wilson & Brown, 1955: 126.



References based on Global Ant Biodiversity Informatics

  • Bestelmeyer B. T., and J. A. Wiens. 2001. Local and regional-scale responses of ant diversity to a semiarid biome transition. Ecography 24: 381-392.
  • 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.
  • Gregg, R.T. 1963. The Ants of Colorado.
  • Kannowski P. B. 1956. The ants of Ramsey County, North Dakota. American Midland Naturalist 56(1): 168-185.
  • Lavigne R., and T. J. Tepedino. 1976. Checklist of the insects in Wyoming. I. Hymenoptera. Agric. Exp. Sta., Univ. Wyoming Res. J. 106: 24-26.
  • 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.
  • Wheeler G. C., and E. W. Wheeler. 1944. Ants of North Dakota. North Dakota Historical Quarterly 11:231-271.
  • Wheeler G. C., and J. Wheeler. 1987. A Checklist of the Ants of South Dakota. Prairie Nat. 19(3): 199-208.
  • 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. 1988. A checklist of the ants of Montana. Psyche 95:101-114
  • Wheeler, G.C. and J. Wheeler. 1988. A checklist of the ants of Wyoming. Insecta Mundi 2(3&4):230-239
  • Wheeler, G.C., J. Wheeler, T.D. Galloway and G.L. Ayre. 1989. A list of the ants of Manitoba. Proceedings of the Entomological Society of Manitoba 45:34-49
  • Wilson E. O., and W. L. Brown, Jr. 1955. Revisionary notes on the sanguinea and neogagates groups of the ant genus Formica. Psyche (Cambridge) 62: 108-129.