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Costa Rica (Atlantic and southern Pacific lowlands and slopes to 800m).
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).
micretes occurs in wet 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. 1959. The Neotropical species of the ant genus Strumigenys Fr. Smith: Group of emeryi Mann. Entomological News 70:97-104.
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: 60 times found in mature wet forest, 31 times found in montane wet forest, 12 times found in wet forest, 8 times found in tropical wet forest, 11 times found in lowland rainforest, 8 times found in ridgetop cloud forest, isolated peak with oak trees, 4 times found in CES (700.350 GIS), 3 times found in tropical rainforest, 1 times found in Primary wet forest, 1 times found in Sendero Jaguar, ...
Found most commonly in these microhabitats: 103 times ex sifted leaf litter, 21 times Hojarasca, 1 times nest under stone, 1 times nest in soil, 1 times Hojarasca., 3 times Alrrededor de M/12, 1 times under epiphytes, 2 times sifted litter, 1 times see notes under JTL3342, 1 times leaf litter sample, GIS 1800/900. [examples of each ant species, all parasitica, 1 times ex sifted leaf litter on ground, ...
Collected most commonly using these methods: 77 times miniWinkler, 27 times Winkler, 23 times Mini Winkler, 12 times maxiWinkler, 6 times search, 7 times Berlese, 4 times Search & Berles, 1 times Pitfall.
Elevations: collected from 5 - 1200 meters, 371 meters average
Collect Date Range: collected between 1985-07-23 and 2020-02-12
Type specimens: holotype: jtl016073