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The species has a large range from Central America (Belize, Honduras and Panama) southwards probably throughout tropical South America. It has not been recorded from Costa Rica.
Acropyga smithii is known to inhabit rainforests and cacao plantations. It occurs in the soil and litter; Weber (1944) reported nests from red clay soils down to a depth of 7.5 cm. Queens have been recorded from under the bark of a rotten log. Weber (1944) reported that at least two queens were found in one nest, indicating that this species may be polygynous. Winged reproductives have been collected from January-May.
Found most commonly in these habitats: 51 times found in tropical rainforest, 28 times found in mature wet forest, 11 times found in 2º tropical rainforest, 12 times found in tropical wet forest, 6 times found in 2º lowland tropical rainforest, 4 times found in montane wet forest, 2 times found in wet forest, 1 times found in disturbed tropical wet forest, 1 times found in 1º tropical rainforest, 1 times found in tropical moist forest, ...
Found most commonly in these microhabitats: 112 times ex sifted leaf litter, 4 times nest in clay bank, 3 times Hojarasca, 1 times sifted litter (leaf mold, rotten wood), 1 times in excavated soil of clay bank, 1 times Ex hojarasca.
Collected most commonly using these methods: 94 times MiniWinkler, 17 times MaxiWinkler, 5 times search, 3 times Mini Winkler, 1 times Winkler.
Elevations: collected from 20 - 1150 meters, 290 meters average
Type specimens: Holotype of Acropyga smithii: casent0903181