Costa Rica, Trinidad, Brazil, Amazonian Bolivia. In Costa Rica: mid-elevation Atlantic slope.
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).
trinidadensis occurs in wet forest habitat in Costa Rica. It is known from arboreal foragers on low vegetation.
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. 1954. The neotropical species of the ant genus Strumigenys Fr. Smith: Group of saliens Mayr. Journal of the New York Entomological Society 62:55-62.
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.
Found most commonly in these habitats: 98 times found in montane wet forest, 26 times found in tropical wet forest
Collected most commonly using these methods or in the following microhabitats: 60 times Mini Winkler, 22 times miniWinkler, 16 times Sweeping, 11 times flight intercept trap, 6 times maxiWinkler, 4 times Berlese, 1 times sweep net, 3 times beating, 1 times baiting
Elevations: collected from 450 - 960 meters, 566 meters average