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Honduras to Bolivia (Lattke 1995, Brown 1958). Costa Rica: mature wet forests of the Atlantic slope, to 1500m.
Gnamptogenys porcata inhabits mature wet forest. It is arboreal and nests in live or dead stems. It appears to be a generalist predator on small arthropods.
During recent collecting at the 1500m site (Finca Murillo) on the Barva transect, colonies were found to be relatively common in live stems of Cecropia angustifolia (Cecropiaceae) and Neomirandea angularis (Asteraceae). These specimens are smaller and of a lighter orange color than specimens from 500m and lower, but specimens from 1100m are intermediate.
Brown, W. L., Jr. 1958. Contributions toward a reclassification of the Formicidae. II. Tribe Ectatommini (Hymenoptera). Bulletin of the Museum of Comparative Zoology 118:175-362.
Emery, C. 1896. Studi sulle formiche della fauna neotropica. XVII-XXV. Bolletino della Societa Entomologica Italiana 28:33-107, pl. 1.
Lattke, J. E. 1995. Revision of the ant genus Gnamptogenys in the New World (Hymenoptera: Formicidae). Journal of Hymenoptera Research 4:137-193.
Found most commonly in these habitats: 36 times found in cloud forest, 32 times found in montane wet forest, 24 times found in 2º mesophil forest, 20 times found in mesophil forest, 16 times found in ridgetop cloud forest, 15 times found in Bosque de pino, 10 times found in mature wet forest, 5 times found in wet forest, 8 times found in mixed hardwood forest, 7 times found in cloud forest, on steep slope, probably old 2nd growth, near pasture, ...
Found most commonly in these microhabitats: 102 times ex sifted leaf litter, 34 times at bait, 15 times Sobre Vegetacion, 5 times Hojarasca, 1 times various nest collections, 4 times strays, 1 times nest in rotten wood, 1 times nest, 1 times ex rotten wood, 3 times yellow pan trap, 1 times under moss mat on base of tree trunk., ...
Collected most commonly using these methods: 68 times MiniWinkler, 32 times Baiting, 23 times MaxiWinkler, 15 times search, 15 times Sweeping, 10 times Winkler, 10 times Hojarasca berlese, 10 times Malaise, 6 times Berlese, 5 times Mini Winkler, 3 times yellow pan trap, ...
Elevations: collected from 40 - 2407 meters, 1156 meters average