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Costa Rica to W. Ecuador (Brown 1976). Costa Rica: Atlantic slope wet forest to 700m elevation, from Cordillera de Guanacaste to the Talamancas.
This species is common and, with its bright red head, conspicuous in the Atlantic lowland rainforests of Costa Rica. It inhabits mature forest, foraging on the ground and low vegetation, and nesting in rotten wood on the ground or rotten stumps. In one case I was collecting at the edge of an old lava field on Volcan Arenal, an area of boulders and open sand, with very little vegetation. A populous colony was under a stone in a narrow strip of grass.
Brown, W. L., Jr. 1976. Contributions toward a reclassification of the Formicidae. Part VI. Ponerinae, tribe Ponerini, subtribe Odontomachiti. Section A. Introduction, subtribal characters. Genus Odontomachus. Studia Entomol. 19:67-171.
Emery, C. 1890. Studii sulle formiche della fauna neotropica. I-V. Boll. Soc. Entomol. It. 22:38-80.
Found most commonly in these habitats: 19 times found in montane wet forest, 6 times found in tropical rainforest, some big trees, 5 times found in tropical rainforest, with some big trees, probably a mix of primary and secondary forest, 3 times found in rainforest, 4 times found in mature wet forest, 3 times found in tropical rainforest, with big trees, probably primary, 3 times found in Primary wet forest, 2 times found in tropical rainforest, old second growth, 2 times found in wet forest, 2 times found in lowland rainforest, ...
Found most commonly in these microhabitats: 15 times ex sifted leaf litter, 10 times at bait, 5 times Sobre Vegetacion, 4 times Hojarasca, 3 times nocturnal strays, 2 times ground nest, 3 times bajo de M/04, 2 times strays, 1 times old lava field; under stone, 2 times Malaise trap, 1 times ex rotten log, ...
Collected most commonly using these methods: 10 times baiting, 11 times miniWinkler, 8 times flight intercept trap, 7 times search, 5 times Malaise, 5 times Sweeping, 4 times winkler, 4 times Mini Winkler, 2 times Berlese, 1 times maxiWinkler, 1 times Blacklight, ...
Elevations: collected from 5 - 1800 meters, 379 meters average
Collect Date Range: collected between 1938-07-05 and 2016-06-02
Type specimens: syntype of Odontomachus haematodes erythrocephalus: casent0904006