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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.
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