Argentina, southern Brazil, Guianas, Costa Rica.
In Costa Rica I know this species almost exclusively from Winkler samples of sifted leaf litter from the forest floor. I have records of workers from Carara Biological Reserve in the southern Pacific lowlands, Maritza Biological Station in Guanacaste, and La Selva Biological Station and CATIE on the Atlantic slope. An enigmatic collection is two alate queens collected by Angel Solis, the Coleoptera curator at INBio. He was on a lunch break on the grounds of the INBio collection facility in Santo Domingo de Heredia and he observed a nuptial flight. He collected two queens and gave them to me. Although they did not have associated workers, I identified the queens as Carebarella and am assuming they are the queens of C. bicolor.
Found most commonly in these habitats: 150 times found in mature wet forest, 15 times found in lowland rainforest, 15 times found in montane wet forest, 1 times found in Puesto18,159G,10m., 3 times found in wet forest, 1 times found in CEN, 1 times found in SSO, 1 times found in Parc. sucesionales, 1 times found in SCH, 1 times found in CCL, ...
Collected most commonly using these methods or in the following microhabitats: 151 times MiniWinkler, 32 times Winkler, 15 times Berlese, 18 times Mini Winkler, 2 times search, 2 times Lure/Bait, 1 times Unknown
Elevations: collected from 30 - 1100 meters, 130 meters average