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Costa Rica (Central Valley, Atlantic slope), Nicaragua.
This species was described from a single holotype queen, collected by Schmidt in the vicinity of San Jose in 1940. The diagnosis from Brown (1965) is as follows:
A medium-sized Typhlomyrmex with unusually elongate, narrowly subtriangular mandibles; basal border short and curving broadly into long, indistinctly denticulate masticatory border; apical tooth very long and acute. Petiolar node as seen from above broader than long, with feebly concave (almost straight) anterior border and strongly concave posterior border. Postpetiole with a distinct, sharp median longitudinal carina on the anterior third of its dorsal surface.
Additional description included the measurements HL 0.72, HW (without eyes) 0.63, SL 0.52.
Workers are now known that have the dorsal carina on the third abdominal segment. On these workers, the basal margin of the mandible curves into the masticatory margin, but the mandible is not strongly falcate.
Brown, W. L., Jr. 1965. Contributions to a reclassification of the Formicidae. IV. Tribe Typhlomyrmecini (Hymenoptera). Psyche (Camb.) 72:65-78.
Found most commonly in these habitats: 2 times found in mature wet forest.
Found most commonly in these microhabitats: 2 times ex sifted leaf litter.
Collected most commonly using these methods: 2 times miniWinkler.
Elevations: collected from 40 - 360 meters, 200 meters average
Collect Date Range: collected between 2011-05-07 and 2012-05-11
Type specimens: holotype: jtl008069
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