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Guatemala (type locality), Costa Rica. Costa Rica: throughout the country in wet to moist habitats.
This tiny species, the smallest known to me, occurs in a wide variety of habitats throughout Costa Rica. It is common in the lowland rainforest of La Selva and in the cloud forest of Monteverde. Although common in mature forested habitats, it is not restricted to them; I have collected it in Parque Nacional, a small city park in the middle of San Jose! Workers were in some dead wood at the base of a tree, at the edge of a city sidewalk. The species occurs very often in Winkler samples of leaf litter from the forest floor. I rarely collect it by any other means. I once found a nest under loose bark of dead wood, and I once observed workers emerging from under loose bark to recruit to a dead tabanid.
I have seen an ergatoid male of what I assume to be this species, from La Selva Biological Station. It was an isolated specimen from a soil sample, not associated with workers. I associate it with this species due to its small size.
Forel, A. 1909. Ameisen aus Guatemala usw., Paraguay und Argentinien (Hym.). Dtsch. Entomol. Z. 1909:239-269.
Found most commonly in these habitats: 211 times found in mature wet forest, 142 times found in montane wet forest, 119 times found in cloud forest, 52 times found in tropical wet forest, 49 times found in tropical rainforest, 40 times found in ridgetop cloud forest, isolated peak with oak trees, 40 times found in ridgetop cloud forest, 39 times found in riparian forest, cloud forest along stream, near dairy farm pasture, 2nd growth or disturbed primary, 28 times found in wet forest, 34 times found in lowland rainforest, ...
Found most commonly in these microhabitats: 896 times ex sifted leaf litter, 54 times Hojarasca, 19 times ex sifted litter, 11 times sifted litter, 5 times sifted litter (leaf mold, rotten wood), 3 times leaf litter, 5 times at bait, 4 times ex sifted leaf litter on ground, 2 times sifted leaf litter, 2 times Hojarasca, second growth, vegetation only about 4m high, climbing steeply, 3 times Ex sifted leaf litter., ...
Collected most commonly using these methods: 702 times MiniWinkler, 110 times Winkler, 129 times MaxiWinkler, 62 times Berlese, 62 times Mini Winkler, 7 times search, 5 times baiting, 1 times Malaise, 1 times 6L sifted litter, extracted in Winkler sack over 36 hours, 1 times 6L sifted litter, extracted in Winkler sack over 44 hours, 1 times litter extraction, ...
Elevations: collected from 10 - 2010 meters, 756 meters average
Collect Date Range: collected between 1982-04-04 00:00:00.0 and 2022-01-13 00:00:00.0