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Southern Mexico to Colombia and Venezuela, Bahamas (where probably introduced; Brown 1961), Cuba. Costa Rica: Atlantic and southern Pacific lowlands.
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).
lanuginosa occurs in wet and dry forest habitats. It nests in dead wood on the ground.
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. 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: 23 times found in tropical rainforest, 21 times found in tropical moist forest, 16 times found in 2º lowland rainforest, 13 times found in lowland rainforest, 11 times found in 2º lowland tropical rainforest, 5 times found in tropical wet forest, 5 times found in rainforest, 5 times found in montane wet forest, 4 times found in 2º wet forest, 2 times found in 2nd growth dry forest, ...
Found most commonly in these microhabitats: 113 times ex sifted leaf litter, 4 times Hojarasca, 5 times ex sifted litter, 4 times Malaise trap, 1 times nest in hole in rock, 1 times epiphytic material, Sacoglottis trichogyna, 1 times Frente al refugio hacia el sendero entre M/14 y M/15, 1 times ex sifted litter; 6L sifted litter; extracted in Winkler sack over 32 hours, 1 times Cerca de M/20 y orilla de Quebrada Cantarrana, 1 times Camino toma de Agua, 1 times by ranger station, ...
Collected most commonly using these methods: 65 times MiniWinkler, 32 times MaxiWinkler, 23 times Winkler, 4 times Berlese, 2 times search, 4 times Malaise, 2 times Mini Winkler, 1 times Search & Berles, 1 times under stone, 1 times Maxi Winkler, 1 times Night MiniWinkler, ...
Elevations: collected from 15 - 1189 meters, 275 meters average