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Honduras, Costa Rica, Panama, Colombia (type locality), Trinidad, Guianas. Costa Rica: northwestern lowlands.
Atta (Trachymyrmex) bugnioni Forel 1912:186. Worker: Colombia. Combination in Trachymyrmex: Gallardo, 1916:242. Senior synonym of abortivus, cucumis, humilis, morgani, schomburgki and tucuche: Weber, 1967:273.Natural History:
In Costa Rica I have collected this species twice. Both collections were from seasonal dry forest habitats, in Winkler samples of sifted leaf litter from the forest floor. One collection was from Finca La Pacifica, in a patch of riparian forest, and the other was from Santa Rosa National Park, in the "bosque humedo."
The Costa Rican specimens closely match specimens I collected from the Santa Marta area of Colombia. The type locality of bugnioni is Colombia.
Found most commonly in these habitats: 14 times found in tropical rainforest, 9 times found in 2º tropical rainforest, 7 times found in tropical wet forest, 6 times found in mature wet forest, 5 times found in montane wet forest, 3 times found in tropical moist forest, 1 times found in 2º lowland rainforest, 2 times found in 2º lowland tropical rainforest, 1 times found in 1� forest, 1 times found in wet forest, ...
Found most commonly in these microhabitats: 46 times ex sifted leaf litter, 5 times at bait, 1 times tall forest, high leaf litter decomposition.
Collected most commonly using these methods: 24 times MiniWinkler, 19 times MaxiWinkler, 5 times baiting, 3 times Winkler, 1 times litter sample, 1 times pan trap, 1 times Pitfal 04.
Elevations: collected from 30 - 1372 meters, 337 meters average
Type specimens: syntype of Trachymyrmex morgani: casent0901694