I examined the types of B. attenuata in the Mayr collection and concur that it is clearly related to B. deletrix , and nothing like Simopelta . Workers are tolerant of cold wet conditions, and may be observed foraging in cloud forest during inclement weather. They forage on the ground and in the canopy.
Workers forage in dense columns.
Raiding columns repeatedly have been observed attacking Pheidole nests. Colony emigrations are encountered with workers transporting brood and the queen traveling with the column, suggesting nomadic behavior. Workers have small eyes, reduced to a single facet. Nest sites are variable and reveal additional similarities to ecitonine behavior. Apparent longer-term nest sites have been observed twice, in extensive chambers in soil.