Current View: All Antweb
Change View
Cite this page

Citing AntWeb


To cite this page, please use the following:

· For print: . Accessed

· For web:

Species: Strumigenys louisianae   Roger, 1863 

Download Data

Taxonomic History (provided by Barry Bolton, 2018)

Strumigenys louisianae Roger, 1863a PDF: 211 (w.) U.S.A. Nearctic. AntCat AntWiki HOL

Taxonomic history

Emery, 1895d PDF: 326 (q.); Haug, 1932 PDF: 170 (m.); Wheeler & Wheeler, 1955a PDF: 136 (l.).
Senior synonym of Strumigenys unispinulosa: Emery, 1895d PDF: 326; Brown, 1953g PDF: 28; of Strumigenys laticephala: Smith, 1951c: 826; Brown, 1953g PDF: 28; of Strumigenys bruchi, Strumigenys costaricensis, Strumigenys cubaensis, Strumigenys guatemalensis, Strumigenys longicornis, Strumigenys obscuriventris, Strumigenys soledadensis: Brown, 1953g PDF: 28; of Strumigenys clasmospongia, Strumigenys fusca, Strumigenys unidentata: Brown, 1961a PDF: 64; of Strumigenys producta: Bolton, 2000: 524; of Strumigenys wani: Bolton, Sosa-Calvo, et al. 2008: 62.
See also: Wilson, 1954a PDF: 481; Bolton, 2000: 525.


Nearctic Region: Alabama, Arizona, Arkansas, Florida, Georgia, Hidalgo, Illinois, Louisiana, Mississippi, Missouri, New Mexico, North America, North Carolina, Puebla, South Carolina, Tennessee, Texas, United States
Neotropical Region: Alajuela, Amapá, Amazonas, Americas, Aragua, Argentina, Atlántida, Bahamas, Bahia, Barbados, Bolivia, Brazil, Buenos Aires, Caldas, Caribbean, Cartago, Central, Central America, Chiapas, Colombia, Comayagua, Costa Rica, Cuba, Darién, Dominican Republic, Ecuador, El Beni, El Salvador, Esmeraldas, Galapagos Islands, Galápagos, Gracias a Dios, Guadeloupe, Guanacaste, Guatemala, Haiti, Heredia, Honduras, La Libertad, La Paz, Limón, Magdalena, Meta, Mexico, Miranda, Napo, Nayarit, Nicaragua, Nueva Segovia, Oaxaca, Panama, Paraguay, Puerto Rico, Puntarenas, Rio de Janeiro, San José, San Salvador, Santa Catarina, South America, Suriname, Venezuela, Veracruz

Distribution Notes:

Throughout tropical and subtropical America, from the southern United States to Argentina. In Costa Rica, known from Atlantic and Pacific lowlands, and the Meseta Central.


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).

The feeding habits of louisianae have been studied by Wilson (1950, 1954) and Brown (1962). Workers take live prey, mostly small arthropods in litter and soil. Preferred prey are entomobryoid and symphypleonan Collembola; poduroid collembolans are not taken.

The species prefers synanthropic and/or seasonally dry habitats. It is more abundant in the peripheral parts of its range (Costa Rica northward, southern Brazil southward) than in the center (Panama southward to Amazonian Brazil) (Brown 1961).


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. 1953. Revisionary studies of the ant tribe Dacetini. American Midland Naturalist 50:1-137.

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. 1962. The neotropical species of the ant genus Strumigenys Fr. Smith: Synopsis and keys to the species. Psyche 69:238-267.

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

Wilson, E. O. 1950. Notes on the food habits of Strumigenys louisianae Roger (Hymenoptera: Formicidae). Bulletin of the Brooklyn Entomological Society 45: 85-86.

Wilson, E. O. 1954 ("1953"). The ecology of some North American dacetine ants. Annals of the Entomological Society of America 46:479-495.

Taxonomic Treatment (provided by Plazi)

Scientific Name Status Publication Pages ModsID GoogleMaps
Strumigenys louisianae   Wild, A. L., 2007, A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)., Zootaxa 1622, pp. 1-55: 37, (download) 37 21367
Pyramica wani   Bolton, B., Sosa-Calvo, J., Fernà ¡ ndez, F. & Lattke, J. E., 2008, New synonyms in neotropical Myrmicine ants (Hymenoptera: Formicidae)., Zootaxa 1732, pp. 61-64: -1, (download) -1 21399
Strumigenys louisianae nov. sp.  Roger, J., 1863, Die neu aufgeführten Gattungen und Arten meines Formiciden-Verzeichnisses, nebst Ergänzung einiger früher gegeben Beschreibungen., Berliner Entomologische Zeitschrift 7, pp. 131-214: 211, (download) 211 4101

Specimen Habitat Summary

Found most commonly in these habitats: 14 times found in leaf litter, 9 times found in 2º tropical rainforest, 3 times found in tropical rainforest, 4 times found in garden, 0 times found in “Caatinga arbórea”, 1 times found in shade coffee, 3 times found in tropical dry forest, 3 times found in dry forest, 1 times found in dry forest stream edge, 3 times found in wet forest, ...

Found most commonly in these microhabitats: 41 times ex sifted leaf litter, 5 times foragers, 0 times Serrapilheira, 1 times sifted leaf litter, 2 times unter rinde, 1 times near snake pond swamp, 1 times Malaise trap, 1 times in soil, 1 times under dead wood, 1 times under board in lawn, 1 times strays, ...

Collected most commonly using these methods: 19 times Winkler, 20 times Berlese, 14 times search, 13 times MiniWinkler, 10 times MaxiWinkler, 2 times Malaise, 0 times Manual sampling, 1 times Pitfall, 0 times Under rock, 1 times Berlese, palmetto palm litter, 1 times nest in stump, brood in nest, same stump as Solenopsis, ...

Elevations: collected from 5 - 1990 meters, 313 meters average

Type specimens: Cotype of Strumigenys producta: antweb1032161; Lectotype of Strumigenys clasmospongia: antweb1032160; Paralectotype of Strumigenys clasmospongia: antweb1038242; syntype of Strumigenys unidentata: casent0915694; syntype of Strumigenys bruchi: casent0904939, casent0909323; syntype of Strumigenys fusca: casent0904934; syntype of Strumigenys unispinulosa: casent0904935; syntype of Strumigenys unispinulosa longicornis: casent0905785; type of Strumigenys louisianae: focol2163, focol2164

See something amiss? Send us an email.
Enlarge Map