Acromyrmex lundi (Guérin)
Synonymy.—Atta lundi [Brown, personal communication, 1957].
Commensal.—Attaphila bergi, Argentina and Uruguay (Bolívar, 1901): The cockroach was found in the nests of the ants sitting on the back, neck, or head of sexual individuals. It remains attached to the ant during swarming. The antennae seem always to be mutilated. Bruch (1916) stated that in La Plata A. bergi is encountered by hundreds in every nest of A. lundi.