Pseudomyrmex ejectus

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Pseudomyrmex ejectus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Pseudomyrmecinae
Genus: Pseudomyrmex
Species: P. ejectus
Binomial name
Pseudomyrmex ejectus
(Smith, F., 1858)

Pseudomyrmex ejectus casent0102684 profile 1.jpg

Pseudomyrmex ejectus casent0102684 dorsal 1.jpg

Specimen Label


Gillette et al. (2015), in a Chaipas, Mexico field study of twig-nesting ants in coffee plants, found P. ejectus occupied 57% of all occupied twig-nests above 1100 m. In Florida, this species is the host for the workerless parasite Pseudomyrmex leptosus.


Keys including this Species


Distribution based on Regional Taxon Lists

Nearctic Region: United States.
Neotropical Region: Bolivia, Brazil, Costa Rica, Greater Antilles, Guatemala, Mexico.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb






The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • ejectus. Pseudomyrma ejecta Smith, F. 1858b: 157 (w.) "probably Brazil". Emery, 1894c: 147 (q.). Combination in Pseudomyrmex: Kempf, 1972a: 217. Senior synonym of lincecumii: Ward, 1989: 436. See also: Ward, 1985b: 232.
  • lincecumii. Ponera (Ectatomma) lincecumii Buckley, 1866: 172 (w.) U.S.A. Combination in Pseudomyrma: Mayr, 1886d: 464; in Leptalea: Smith, M.R. 1951a: 788. See also: Emery, 1895c: 270. Junior synonym of ejectus: Ward, 1989: 436.



  • Emery, C. 1894d. Studi sulle formiche della fauna neotropica. VI-XVI. Bull. Soc. Entomol. Ital. 26: 137-241 (page 147, queen described)
  • Gillette, P. N., K. K. Ennis, G. D. Martinez, and S. M. Philpott. 2015. Changes in Species Richness, Abundance, and Composition of Arboreal Twig-nesting Ants Along an Elevational Gradient in Coffee Landscapes. Biotropica. 47:712-722. doi:10.1111/btp.12263
  • Kempf, W. W. 1972b. Catálogo abreviado das formigas da regia~o Neotropical. Stud. Entomol. 15: 3-344 (page 217, Combination in Pseudomyrmex)
  • Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp. (page 157, worker described)
  • Ward, P. S. 1985b. The Nearctic species of the genus Pseudomyrmex (Hymenoptera: Formicidae). Quaest. Entomol. 21: 209-246 (page 232, see also)
  • Ward, P. S. 1989a. Systematic studies on pseudomyrmecine ants: revision of the Pseudomyrmex oculatus and P. subtilissimus species groups, with taxonomic comments on other species. Quaest. Entomol. 25: 393-468 (page 436, Senior synonym of lincecumii)