Strumigenys fairchildi Brown 1961

Dacetini, Myrmicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker face view

worker lateral view

Additional images: worker dorsal view.


Panama (type locality), Costa Rica. In Costa Rica: Atlantic lowlands.


Apical fork of mandible with two intercalary teeth; mandible with two pronounced preapical teeth; eye large, with over 35 facets; dorsal and ventral teeth of propodeal lamella pronounced, acute; gaster finely longitudinally striolate, opaque-sericeous throughout. Also see Bolton (2000:564).

Head length 0.96mm, mandible length 0.59, CI 75, MI 61 (n=1 holotype worker from Panama; Brown 1961).

Similar species: extirpa

Natural History

Brown and Wilson (1959) summarize the genus as follows:

"Widespread in tropics and warm temperate areas. Primarily forest-dwelling; some species occur in grassland and arid scrub. ... Nests mostly in soil and rotting wood; a few species live in arboreal plant cavities in tropical rain forest. Foraging hypogaeic to epigaeic-arboreal. Food: most species are collembolan feeders; a few are polyphagous predators or occasionally feed on sugary substances..."

Members of the genus are all predaceous, with a kinetic mode of attack (Bolton 1999).

fairchildi is arboreal.

Selected Records

La Selva: canopy fogging sample.

La Selva: worker on Inga extrafloral nectary.

Literature Cited

Bolton, B. 1999. Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). J. Nat. Hist. 33:1639-1689.

Bolton, B. 2000. The ant tribe Dacetini, with a revision of the Strumigenys species of the Malagasy Region by Brian L. Fisher, and a revision of the Austral epopostrumiform genera by Steven O. Shattuck. Memoirs of the American Entomological Institute 65:1-1028.

Brown, W. L., Jr. 1961. The Neotropical species of the ant genus Strumigenys Fr. Smith: Miscellaneous concluding studies. Psyche 68:58-69.

Brown, W. L., Jr., Wilson, E. O. 1959. The evolution of the dacetine ants. Quarterly Review of Biology 34:278-294.

Page author:

John T. Longino, The Evergreen State College, Olympia WA 98505

Date of this version: 7 May 2001
Previous versions of this page: 21 April 1997, 24 July 1997
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