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Epitritus emmae Emery 1890:70. Holotype worker: Saint Thomas Island, West Indies [MCSN].
Later moved to Quadristruma, then Strumigenys. See Bolton (2000) for complete synonymy.
Members of the genus are all predaceous, with a kinetic mode of attack (Bolton 1999).
This species has a distribution and habitat preference typical of tropical tramp species (Brown 1954). It occurs widely in many tropical and subtropical regions of the world, including oceanic islands such as Hawaii, and it is found most often in highly disturbed habitats such as beach margins and agricultural areas. The geographic origin of emmae is apparently Australia, where several related species occur (Bolton 2000).
Bolton, B. 1983. The Afrotropical dacetine ants (Formicidae). Bulletin of the British Museum (Natural History), Entomology Series 46:267-416.
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. 1949. Revision of the ant tribe Dacetini: III. Epitritus Emery and Quadristruma new genus (Hymenoptera: Formicidae). Trans. Am. Entomol. Soc. 75:43-51.
Brown, W. L., Jr. 1954. The ant genus Strumigenys Fred. Smith in the Ethiopian and Malagasy regions. Bull. Mus. Comp. Zool. 112:3-34.
Emery, C. 1890. Studi sulle formiche della fauna neotropica. I-V. Bullettino della Societa Entomologica Italiana 22:38-80.
Found most commonly in these habitats: 10 times found in Rainforest, 10 times found in forest, 3 times found in coastal scrub, 6 times found in mixed forest, 5 times found in 2º lowland rainforest, 4 times found in palm forest, 4 times found in littoral forest, 4 times found in tropical dry forest, 2 times found in dry scrub, 1 times found in 2nd growth riparian forest, ...
Collected most commonly using these methods or in the following microhabitats: 11 times 9 MaxiWinks, mixed samples, 2 times 2 Maxi Winks, 8 times Winkler, 5 times davis-sifting; incidental aspirated, 5 times maxiWinkler, 1 times 4 MaxiWinks, mixed samples, 1 times 3 MaxiWinks, mixed samples, 3 times MW 50 sample transect, 5m, 3 times Pitfall trap, 1 times 1 maxi wink, 1 times Hand-Collected from 1 square meter of sifted leaf litter, ...
Elevations: collected from 1 - 914 meters, 176 meters average